Publications

Journal article

Walker T, Marchant AL, Bentine E, Buchmüller O, Clarke K, Foot C, Hawkins L, Hughes KM, Hussain K, Iannizzotto Venezze L, Josset A, Labiad H, Lee D, Thornton-Sparkes TC, Valenzuela T, Van der Grinten M, Vick A, Bason MG, Baynham CFA, Hobson Ret al., 2026,

A high-flux source of cold strontium with a loading rate of 4×1010 atoms/s for open release

, Avs Quantum Science, Vol: 8

We present a high-flux source of cold strontium atoms based on a two-dimensional magneto-optical trap (2D MOT) and a Zeeman slower. We use the source to load a 3D MOT in a separate science chamber, observing a loading rate of 4 × 1010 atoms / s—to our knowledge, the highest reported loading flux for strontium. To characterize the vacuum pressure in the science chamber, we load the atoms into a magnetic trap and measure a lifetime of between 8 and 24 s, depending on the oven temperature. Finally, we characterize the atom flux and velocity distributions from the oven and from the 2D MOT source, finding reasonable agreement with models in the free molecular flow regime. Our results show that it is possible to readily produce a cold strontium flux at comparable levels to those of alkali species, at oven temperatures compatible with long-term operation, and at vacuum pressures suitable for state-of-the-art quantum experiments. We make our design available at no cost to benefit researchers in the quantum community.

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Journal article

Belyaev A, Gevorgyan A, Hayrapetyan A, Tumasyan A, Adam W, Benato L, Bergauer T, Dragicevic M, Gundacker S, Guven AK, Hussain PS, Jeitler M, Krammer N, Li A, Liko D, Matthewman M, Schieck J, Schöfbeck R, Shooshtari M, Sonawane M, Van Den Bossche N, Waltenberger W, Wulz CE, Janssen T, Kwon H, Ocampo Henao D, Van Laer T, Van Mechelen P, Ahmadi D, Bierkens J, Breugelmans N, Dansana S, De Moor A, Delcourt M, Gupta C, Heyen F, Hong Y, Kang K, Kashko P, Lowette S, Makarenko I, Nandakumar S, Tavernier S, Tytgat M, Van Onsem GP, Van Putte S, Vannerom D, Wybouw T, Beshr A, Bilin B, Caviglia Roman F, Clerbaux B, Das AK, De Bruyn I, De Lentdecker G, Ducarme E, Evard H, Favart L, Kalaitzidou I, Khalilzadeh A, Malara A, Shahzad MA, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, Yuan C, Zhang F, Cauwels A, De Coen M, Dobur D, Giordano C, Gokbulut G, Kaspar K, Kavtaradze D, Marckx D, Mehta A, Skovpen K, Tomaru AM, van der Linden J, Vandenbroeck J, Aarup Petersen H, Benecke A, Bethani A, Cappati A, De Favereau De Jeneret J, Delaere C, Gameiro Casalinho F, Giammanco A, Guzel AO, Hussain M, Lawrence Z, Lemaitre V, Lidrych J, Malek P, Turkcapar S, Alves GA, Barroso Ferreira Filho M, Coelho E, Gonçalves Sales MVet al., 2026,

System-size dependence of charged-particle suppression in ultrarelativistic nucleus-nucleus collisions

, Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, Vol: 880, ISSN: 0370-2693

High-energy partons lose energy while propagating through the hot, strongly interacting medium produced in ultrarelativistic nucleus-nucleus collisions, leading to a suppression of particle production at high transverse momentum (p <inf>T</inf>). The dependence of this energy loss on the size of the colliding nuclear system has yet to be firmly established experimentally. This Letter presents a systematic study of charged-particle suppression across four different nucleus-nucleus collision systems using nuclear modification factors (R <inf>AA</inf>) measured by the CMS Collaboration at the CERN LHC. Previous CMS measurements of R <inf>AA</inf> in oxygen-oxygen, xenon-xenon, and lead-lead collisions are recast with identical p <inf>T</inf> intervals and are complemented by the first measurement of the charged-particle R <inf>AA</inf> in neon-neon collisions at [b]s<inf>NN</inf>=5.36TeV. The neon-neon data correspond to an integrated luminosity of 0.76nb−1. The R <inf>AA</inf> in all collision systems examined show similar qualitative trends as a function of p <inf>T</inf>, but have a magnitude which is ordered with the nucleon number A . The R <inf>AA</inf> feature a downward slope at low p <inf>T</inf>, a local minimum at around 5–7GeV, and an upward slope with increasing p <inf>T</inf>. The R <inf>AA</inf> are also compared in terms of A 1/3, which is proportional to the nuclear radius. Models including only initial-state nuclear effects fail to reproduce the observed trends, whereas energy loss models reproduce the trends in the region p<inf>T</inf>'9.6GeV.

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Journal article

Morgan K, Azuma T, Baptista G, Becker D, Bennett D, Butin F, Dean JW, Eizenberg O, Fowler JW, Fujioka H, Gamba D, Gard JD, Garroum N, Guerra M, Hashimoto T, Higuchi T, Hori M, Indelicato P, Keller M, Machado J, Mates JAB, Nakamura N, Nobles J, Nez F, Ohayon B, Okada S, Ortiz N, Rathi S, Roosa M, Rousse JY, Saito T, Schmidt D, Senetaire Q, Sommerfeldt J, Szypryt P, Ullom J, Weber J, Yzombard P, Zito M, Paul N, Swetz Det al., 2026,

Transition-Edge Sensor Spectrometer for Precision Spectroscopy of Antiprotonic Atoms

, IEEE Transactions on Applied Superconductivity, Vol: 36, ISSN: 1051-8223

antiProtonic Atom X-ray (PAX) spectroscopy is an experiment that aims to test strong-field quantum electrodynamics (QED) effects by performing high-precision X-ray spectroscopy of antiprotonic atoms. PAX will use a low-energy antiproton beam provided by the Extra Low ENergy Antiproton (ELENA) ring at the European Organization for Nuclear Research (CERN) to create antiprotonic atoms. A superconducting transition-edge sensor (TES) spectrometer will be used to measure the energy of transitions between circular Rydberg states in these atoms. The energy range of interest for the experiment spans 50 keV to 250 keV, and the desired precision for measuring the centroids of the emission lines is 10^{-5}. The spectrometer for PAX is intended to have four 96-pixel TES arrays and will be read out with a microwave superconducting quantum interference device (SQUID) multiplexer. As a step toward building the full instrument, we built a scaled-down version of the spectrometer that was installed at the TEst Line for Machine And Antimatter eXperiments (TELMAX) facility at ELENA in April 2025. The purpose of this deployment was to make an observation of X-ray emission by antiprotonic atoms and to better understand the effect of the pionic charged particle background due to antiproton annihilation on the performance of the TES array. This pilot spectrometer had an array of 60 TES pixels in a compact adiabatic demagnetization refrigerator cryostat. The sensors were read out with a microwave SQUID multiplexer. Each pixel consisted of a molybdenum/gold bilayer TES with a coplanar gold “landing pad” for a bulk tin absorber that was attached by an epoxy joint. We discuss the design of the TES pixels, the microwave SQUID readout, and the cryogenic platform. Finally, we present calibration data obtained at TELMAX using radioactive sources to assess the performance of the spectrometer in the antiproton beam-off condition.

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Journal article

Hayrapetyan A, Makarenko V, Tumasyan A, Adam W, Benato L, Bergauer T, Dragicevic M, Hussain PS, Jeitler M, Krammer N, Li A, Liko D, Matthewman M, Schieck J, Schöfbeck R, Shooshtari M, Sonawane M, Van Den Bossche N, Waltenberger W, Wulz C-E, Janssen T, Kwon H, Ocampo Henao D, Van Laer T, Van Mechelen P, Ahmadi D, Bierkens J, Breugelmans N, DHondt J, Dansana S, De Moor A, Delcourt M, Gupta C, Heyen F, Hong Y, Kashko P, Lowette S, Makarenko I, Nandakumar S, Tavernier S, Tytgat M, Van Onsem GP, Van Putte S, Vannerom D, Wybouw T, Beshr A, Bilin B, Caviglia Roman F, Clerbaux B, Das AK, De Bruyn I, De Lentdecker G, Ducarme E, Evard H, Favart L, Khalilzadeh A, Malara A, Shahzad MA, Sharma A, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, Zhang F, Cauwels A, De Coen M, Dobur D, Giordano C, Gokbulut G, Kaspar K, Kavtaradze D, Marckx D, Skovpen K, Tomaru AM, van der Linden J, Vandenbroeck J, Aarup Petersen H, Bein S, Benecke A, Bethani A, Bruno G, Cappati A, De Favereau De Jeneret J, Delaere C, Gameiro Casalinho F, Giammanco A, Guzel AO, Lemaitre V, Lidrych J, Malek P, Turkcapar S, Alves GA, Barroso Ferreira Filho M, Coelho E, Hensel C, Matos Figueiredo D, Menezes De Oliveira T, Mora Herrera C, Rebello Teles P, Soeiro M, Tonelli Manganote EJ, Vilela Pereira A, Aldá Júnior WL, Brandao Malbouisson H, Carvalho W, Chinellato J, Costa Reis M, Da Costa EM, Da Silva Dalto D, Da Silveira GG, De Jesus Damiao D, Fonseca De Souza S, Gomes De Souza R, Jesus SS, Laux Kuhn T, Maslova K, Mota Amarilo K, Mundim L, Nogima H, Pinheiro JP, Santoro A, Sznajder A, Thiel M, Torres Da Silva De Araujo F, Bernardes CA, Calligaris L, Carvalho Leite J, Damas F, Tomei TRFP, Gregores EM, Lopes Da Costa B, Maietto Silverio I, Mercadante PG, Novaes SF, Padula SS, Scheurer V, Aleksandrov A, Antchev G, Danev P, Hadjiiska R, Iaydjiev P, Shopova M, Sultanov G, Dimitrov A, Litov L, Pavlov B, Petkov P, Petrov A, Keshri S, Laroze D, Meena M, Thakur S, Brooks W, Cheng T, Javaid T, Wang L, Yuan L, Gu J, Hu Zet al., 2026,

Search for a new heavy resonance decaying to a top quark and a neutral scalar boson in proton-proton collisions at s=13TeV

, Physics Letters B, Vol: 880, Pages: 140812-140812, ISSN: 0370-2693

Journal article

Hayrapetyan A, Makarenko V, Tumasyan A, Adam W, Benato L, Bergauer T, Dragicevic M, Giordano C, Hussain PS, Jeitler M, Krammer N, Li A, Liko D, Matthewman M, Schieck J, Schöfbeck R, Shooshtari M, Sonawane M, Waltenberger W, Wulz C-E, Janssen T, Kwon H, Ocampo Henao D, Van Laer T, Van Mechelen P, Bierkens J, Breugelmans N, DHondt J, Dansana S, De Moor A, Delcourt M, Heyen F, Hong Y, Kashko P, Lowette S, Makarenko I, Müller D, Song J, Tavernier S, Tytgat M, Van Onsem GP, Van Putte S, Vannerom D, Bilin B, Clerbaux B, Das AK, De Bruyn I, De Lentdecker G, Evard H, Favart L, Gianneios P, Khalilzadeh A, Khan FA, Malara A, Shahzad MA, Sharma A, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, Zhang F, De Coen M, Dobur D, Gokbulut G, Marckx D, Skovpen K, Tomaru AM, Van Den Bossche N, van der Linden J, Vandenbroeck J, Wezenbeek L, Aarup Petersen H, Bein S, Benecke A, Bethani A, Bruno G, Cappati A, De Favereau De Jeneret J, Delaere C, Gameiro Casalinho F, Giammanco A, Guzel AO, Lemaitre V, Lidrych J, Malek P, Mastrapasqua P, Turkcapar S, Alves GA, Barroso Ferreira Filho M, Coelho E, Hensel C, Matos Figueiredo D, Menezes De Oliveira T, Mora Herrera C, Rebello Teles P, Soeiro M, Tonelli Manganote EJ, Vilela Pereira A, Aldá Júnior WL, Brandao Malbouisson H, Carvalho W, Chinellato J, Costa Reis M, Da Costa EM, Da Silveira GG, De Jesus Damiao D, Fonseca De Souza S, Gomes De Souza R, Jesus SS, Laux Kuhn T, Macedo M, Mota Amarilo K, Mundim L, Nogima H, Pinheiro JP, Santoro A, Sznajder A, Thiel M, Torres Da Silva De Araujo F, Bernardes CA, Calligaris L, Damas F, Tomei TRFP, Gregores EM, Lopes Da Costa B, Maietto Silverio I, Mercadante PG, Novaes SF, Orzari B, Padula SS, Scheurer V, Aleksandrov A, Antchev G, Danev P, Hadjiiska R, Iaydjiev P, Shopova M, Sultanov G, Dimitrov A, Litov L, Pavlov B, Petkov P, Petrov A, Keshri S, Laroze D, Thakur S, Brooks W, Cheng T, Javaid T, Wang L, Yuan L, Hu Z, Liang Z, Liu J, Wang X, Yang H, Chen GM, Chen HS, Chen M, Chen Y, Hou Q, Hou X, Iemmi Fet al., 2026,

Observation of Long-Range Collective Flow in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:mi mathvariant="normal">O</mml:mi> <mml:mo>+</mml:mo> <mml:mi mathvariant="normal">O</mml:mi> </mml:mrow> </mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:mi>Ne</mml:mi> <mml:mo>+</mml:mo> <mml:mi>Ne</mml:mi> </mml:mrow> </mml:math> Collisions and Implications for Nuclear Structure Studies

, Physical Review Letters, Vol: 137, ISSN: 0031-9007

<jats:p> The long-range collective flow of particles produced in oxygen-oxygen ( <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"> <a:mrow> <a:mi mathvariant="normal">O</a:mi> <a:mo>+</a:mo> <a:mi mathvariant="normal">O</a:mi> </a:mrow> </a:math> ) and neon-neon ( <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"> <e:mrow> <e:mi>Ne</e:mi> <e:mo>+</e:mo> <e:mi>Ne</e:mi> </e:mrow> </e:math> ) collisions is measured with the CMS detector at the CERN LHC. The data samples were collected at a center-of-mass energy per nucleon pair of 5.36 TeV, with integrated luminosities of <g:math xmlns:g="http://www.w3.org/1998/Math/MathML" display="inline"> <g:mn>7</g:mn> <g:mtext> </g:mtext> <g:mtext> </g:mtext> <g:msup> <g:mi>nb</g:mi> <g:mrow> <g:mo>−</g:mo> <g:mn>1</g:mn> </g:mrow> </g:msup> </g:math> and <i:math xmlns:i="http://www.w3.org/1998/Math/MathML" display="inline"> <i:mn>0.8</i:mn>

Journal article

Hayrapetyan A, Makarenko V, Tumasyan A, Adam W, Benato L, Bergauer T, Dragicevic M, Hussain PS, Jeitler M, Krammer N, Li A, Liko D, Matthewman M, Schieck J, Schöfbeck R, Shooshtari M, Sonawane M, Van Den Bossche N, Waltenberger W, Wulz C-E, Janssen T, Kwon H, Ocampo Henao D, Van Laer T, Van Mechelen P, Ahmadi D, Bierkens J, Breugelmans N, DHondt J, Dansana S, De Moor A, Delcourt M, Gupta C, Heyen F, Hong Y, Kashko P, Lowette S, Makarenko I, Nandakumar S, Tavernier S, Tytgat M, Van Onsem GP, Van Putte S, Vannerom D, Wybouw T, Beshr A, Bilin B, Caviglia Roman F, Clerbaux B, Das AK, De Bruyn I, De Lentdecker G, Ducarme E, Evard H, Favart L, Khalilzadeh A, Malara A, Shahzad MA, Sharma A, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, Zhang F, Cauwels A, De Coen M, Dobur D, Giordano C, Gokbulut G, Kaspar K, Kavtaradze D, Marckx D, Skovpen K, Tomaru AM, van der Linden J, Vandenbroeck J, Aarup Petersen H, Bein S, Benecke A, Bethani A, Bruno G, Cappati A, De Favereau De Jeneret J, Delaere C, Gameiro Casalinho F, Giammanco A, Guzel AO, Lemaitre V, Lidrych J, Malek P, Turkcapar S, Alves GA, Barroso Ferreira Filho M, Coelho E, Gonçalves Sales MV, Hensel C, Matos Figueiredo D, Menezes De Oliveira T, Mora Herrera C, Rebello Teles P, Soeiro M, Tonelli Manganote EJ, Vilela Pereira A, Aldá Júnior WL, Brandao Malbouisson H, Carvalho W, Chinellato J, Costa Reis M, Da Costa EM, Da Silva Dalto D, Da Silveira GG, De Jesus Damiao D, Fonseca De Souza S, Gomes De Souza R, Jesus SS, Laux Kuhn T, Maslova K, Mota Amarilo K, Mundim L, Nogima H, Pinheiro JP, Santoro A, Sznajder A, Thiel M, Torres Da Silva De Araujo F, Bernardes CA, Calligaris L, Carvalho Leite J, Damas F, Tomei TRFP, Gregores EM, Lopes Da Costa B, Maietto Silverio I, Mercadante PG, Novaes SF, Padula SS, Scheurer V, Aleksandrov A, Antchev G, Danev P, Hadjiiska R, Iaydjiev P, Shopova M, Sultanov G, Dimitrov A, Litov L, Pavlov B, Petkov P, Petrov A, Keshri S, Laroze D, Meena M, Thakur S, Brooks W, Cheng T, Javaid T, Wang Let al., 2026,

Observation of the Jet Diffusion Wake Using Dijets in Heavy-Ion Collisions

, Physical Review Letters, Vol: 137, ISSN: 0031-9007

<jats:p> Energetic quarks and gluons traversing a hot and dense quark-gluon plasma deposit energy and momentum into the medium before hadronizing to collimated sprays of particles, known as jets. This energy-momentum deposition is expected to produce medium responses, collectively known as jet wakes, with “diffusion wake” denoting a depletion of particles in the direction opposite to the propagating jet. The diffusion wake is studied by comparing dijet-hadron correlations measured in lead-lead (PbPb) and proton-proton (pp) collisions. The analysis uses PbPb and pp data recorded at a nucleon-nucleon (NN) center-of-mass energy <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"> <a:mrow> <a:msqrt> <a:mrow> <a:msub> <a:mrow> <a:mi>s</a:mi> </a:mrow> <a:mrow> <a:mi>NN</a:mi> </a:mrow> </a:msub> </a:mrow> </a:msqrt> <a:mo>=</a:mo> <a:mn>5.02</a:mn> <a:mtext> </a:mtext> <a:mtext> </a:mtext> <a:mi>TeV</a:mi> </a:mrow> </a:math> with the CMS detector at the CERN LHC. By exploring how the dijet-hadron correlation distributions differ for various pseudorapidity separations of the two jets in the dijet, the presence of a jet diffusion wake is firmly established. The diffusion wake signal has a

Journal article

Hayrapetyan A, Makarenko V, Tumasyan A, Adam W, Andrejkovic JW, Benato L, Bergauer T, Dragicevic M, Giordano C, Hussain PS, Jeitler M, Krammer N, Li A, Liko D, Matthewman M, Mikulec I, Schieck J, Schöfbeck R, Schwarz D, Shooshtari M, Sonawane M, Waltenberger W, Wulz C-E, Janssen T, Kwon H, Ocampo Henao D, Van Laer T, Van Mechelen P, Bierkens J, Breugelmans N, DHondt J, Dansana S, De Moor A, Delcourt M, Heyen F, Hong Y, Kashko P, Lowette S, Makarenko I, Müller D, Song J, Tavernier S, Tytgat M, Van Onsem GP, Van Putte S, Vannerom D, Bilin B, Clerbaux B, Das AK, De Bruyn I, De Lentdecker G, Evard H, Favart L, Gianneios P, Khalilzadeh A, Khan FA, Malara A, Shahzad MA, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, Zhang F, De Coen M, Dobur D, Gokbulut G, Knolle J, Marckx D, Skovpen K, Tomaru AM, Van Den Bossche N, van der Linden J, Vandenbroeck J, Wezenbeek L, Bein S, Benecke A, Bethani A, Bruno G, Cappati A, De Favereau De Jeneret J, Delaere C, Giammanco A, Guzel AO, Lemaitre V, Lidrych J, Malek P, Mastrapasqua P, Turkcapar S, Alves GA, Barroso Ferreira Filho M, Coelho E, Hensel C, Menezes De Oliveira T, Mora Herrera C, Rebello Teles P, Soeiro M, Tonelli Manganote EJ, Vilela Pereira A, Aldá Júnior WL, Brandao Malbouisson H, Carvalho W, Chinellato J, Costa Reis M, Da Costa EM, Da Silveira GG, De Jesus Damiao D, Fonseca De Souza S, Gomes De Souza R, Jesus SS, Laux Kuhn T, Macedo M, Mota Amarilo K, Mundim L, Nogima H, Pinheiro JP, Santoro A, Sznajder A, Thiel M, Torres Da Silva De Araujo F, Bernardes CA, Damas F, Tomei TRFP, Gregores EM, Lopes Da Costa B, Maietto Silverio I, Mercadante PG, Novaes SF, Orzari B, Padula SS, Scheurer V, Aleksandrov A, Antchev G, Danev P, Hadjiiska R, Iaydjiev P, Shopova M, Sultanov G, Dimitrov A, Litov L, Pavlov B, Petkov P, Petrov A, Keshri S, Laroze D, Thakur S, Brooks W, Cheng T, Javaid T, Wang L, Yuan L, Hu Z, Liang Z, Liu J, Wang X, Chen GM, Chen HS, Chen M, Chen Y, Hou Q, Hou X, Iemmi F, Jiang CH, Kapoor A, Liao H, Liu G, Liu Z-et al., 2026,

Search for a narrow resonance with a mass between 10 and 70 GeV decaying to a pair of photons in proton-proton collisions at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> <mml:mo>=</mml:mo> <mml:mn>13</mml:mn> <mml:mtext> </mml:mtext> <mml:mtext> </mml:mtext> <mml:mi>TeV</mml:mi> </mml:math>

, Physical Review D, Vol: 114, ISSN: 2470-0010

<jats:p> The existence of a new spin-zero particle with a mass below the electroweak scale is predicted by several theoretical models. Searches for resonant production of photon pairs at the LHC are able to probe these models. We present a search for a narrow resonance produced through gluon fusion that decays into a pair of photons with an invariant mass between 10 and 70 GeV, using a proton-proton collision dataset from the CMS experiment. This dataset, corresponding to an integrated luminosity of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"> <a:mn>54.4</a:mn> <a:mtext> </a:mtext> <a:mtext> </a:mtext> <a:msup> <a:mi>fb</a:mi> <a:mrow> <a:mo>−</a:mo> <a:mn>1</a:mn> </a:mrow> </a:msup> </a:math> , was recorded in 2018 at a center-of-mass energy of 13 TeV using a newly introduced diphoton trigger that enabled exploration of the low-mass diphoton spectrum. No significant excess above the expected background is observed. Upper limits are set on the product of the gluon fusion production cross section and the branching fraction of the diphoton decay of a narrow resonance. An interpretation of these limits within an effective field theory framework for axionlike particles is also provided. </jats:p>

Journal article

Aaij R, Abdelfatah M, Abdelmotteleb ASW, Abellan Beteta C, Abudinén F, Ackernley T, Adefisoye AA, Adeva B, Adinolfi M, Adlarson P, Agapopoulou C, Aidala CA, Akar S, Akiba K, Albicocco P, Albrecht J, Aleksiejunas R, Alessio F, Alvarez Cartelle P, Amato S, Amey JL, Amhis Y, An L, Anderlini L, Andersson M, Andreola P, Andreotti M, Andres Estrada S, Anelli A, Ao D, Arata C, Archilli F, Areg Z, Argenton M, Arguedas Cuendis S, Arnone L, Artuso M, Aslanides E, Ataíde Da Silva R, Atzeni M, Audurier B, Authier JA, Bacher D, Bachiller Perea I, Bachmann S, Bachmayer M, Back JJ, Bai ZB, Balagura V, Balboni A, Baldini W, Baldwin Z, Balzani L, Bao H, Baptista de Souza Leite J, Barbero Pretel C, Barbetti M, Barbosa IR, Barlow RJ, Barnyakov M, Baron S, Barsuk S, Barter W, Bartz J, Bashir S, Batsukh B, Battista PB, Bavarchee A, Bay A, Beck A, Becker M, Bedeschi F, Bediaga IB, Behling NA, Belin S, Bellavista A, Belov I, Belyaev I, Bencivenni G, Ben-Haim E, Bernet R, Bertolin A, Betti F, Bex J, Bezshyyko O, Bhattacharya S, Bieker MS, Biesuz NV, Biolchini A, Birch M, Bishop FCR, Bitadze A, Bizzeti A, Blake T, Blanc F, Blank JE, Blusk S, Boelhauve JA, Boente Garcia O, Boettcher T, Bohare A, Bolognani C, Bolzonella R, Bonacci RB, Bordelius A, Borgato F, Borghi S, Borsato M, Borsuk JT, Bottalico E, Bouchiba SA, Bovill M, Bowcock TJV, Boyer A, Bozzi C, Brandenburg JD, Brea Rodriguez A, Breer N, Breitfeld C, Brodzicka J, Brown J, Brundu D, Buchanan E, Burgos Marcos M, Burr C, Buti C, Butter JS, Buytaert J, Byczynski W, Cadeddu S, Cai H, Cai Y, Caillet A, Calabrese R, Calefice L, Calvi M, Calvo Gomez M, Camargo Magalhaes P, Cambon Bouzas JI, Campana P, Campos AC, Campoverde Quezada AF, Cao Y, Capelli S, Caporale M, Capriotti L, Caravaca-Mora R, Carbone A, Carcedo Salgado L, Cardinale R, Cardini A, Carniti P, Carus L, Casais Vidal A, Caspary R, Casse G, Cattaneo M, Cavallero G, Cavallini V, Celani S, Celestino I, Cesare S, Chadwick AJ, Chahrour I, Charles M, Charpentier P, Chatzianagnostou Eet al., 2026,

CP Violation Analysis of Local and Nonlocal Amplitudes in the B[over ¯]^{0}→K[over ¯]^{*0}μ^{+}μ^{-} Decay.

, Phys Rev Lett, Vol: 137

A search for CP violation in the B[over ¯]^{0}→K[over ¯]^{*0}μ^{+}μ^{-} decay is performed using proton-proton collision data collected by the LHCb experiment during Run 1 and Run 2, corresponding to an integrated luminosity of 8.4 fb^{-1}. The analysis exploits the full angular distribution of the decay, providing sensitivity to CP-violating effects in both vector and axial-vector contributions to this flavor-changing neutral-current process. The complex Wilson coefficients are determined within the weak effective theory through an unbinned maximum-likelihood fit to the angular observables, incorporating nonlocal hadronic amplitudes across the full dimuon mass spectrum. The precision of the CP-violation observables is improved by an order of magnitude relative to previous measurements, with the imaginary parts of the Wilson coefficients now determined more precisely than the real parts. No significant CP violation is observed, and the results are consistent with the standard model.

Journal article

Aaij R, Abdelfatah M, Abdelmotteleb ASW, Abellan Beteta C, Abudinén F, Ackernley T, Adefisoye AA, Adeva B, Adinolfi M, Adlarson P, Agapopoulou C, Aidala CA, Akar S, Akiba K, Albicocco P, Albrecht J, Aleksiejunas R, Alessio F, Alvarez Cartelle P, Amato S, Amey JL, Amhis Y, An L, Anderlini L, Andersson M, Andreola P, Andreotti M, Andres Estrada S, Anelli A, Ao D, Arata C, Archilli F, Areg Z, Argenton M, Arguedas Cuendis S, Arnone L, Artuso M, Aslanides E, Ataíde Da Silva R, Atzeni M, Audurier B, Authier JA, Bacher D, Bachiller Perea I, Bachmann S, Bachmayer M, Back JJ, Bai ZB, Balagura V, Balboni A, Baldini W, Baldwin Z, Balzani L, Bao H, Baptista de Souza Leite J, Barbero Pretel C, Barbetti M, Barbosa IR, Barlow RJ, Barnyakov M, Baron S, Barsuk S, Barter W, Bartz J, Bashir S, Batsukh B, Battista PB, Bavarchee A, Bay A, Beck A, Becker M, Bedeschi F, Bediaga IB, Behling NA, Belin S, Bellavista A, Belov I, Belyaev I, Bencivenni G, Ben-Haim E, Berkey JLM, Bernet R, Bertolin A, Betti F, Bex J, Bezshyyko O, Bhattacharya S, Bieker MS, Biesuz NV, Biolchini A, Birch M, Bishop FCR, Bitadze A, Bizzeti A, Blake T, Blanc F, Blank JE, Blusk S, Boelhauve JA, Boente Garcia O, Boettcher T, Bohare A, Bolognani C, Bolzonella R, Bonacci RB, Bordelius A, Borgato F, Borghi S, Borsato M, Borsuk JT, Bottalico E, Bouchiba SA, Bovill M, Bowcock TJV, Boyer A, Bozzi C, Brandenburg JD, Brea Rodriguez A, Breer N, Breitfeld C, Brodzicka J, Brown J, Brundu D, Buchanan E, Burgos Marcos M, Burr C, Buti C, Butter JS, Buytaert J, Byczynski W, Cadeddu S, Cai H, Cai Y, Caillet A, Calabrese R, Calefice L, Calvi M, Calvo Gomez M, Camargo Magalhaes P, Cambon Bouzas JI, Campana P, Campos AC, Campoverde Quezada AF, Cao Y, Capelli S, Caporale M, Capriotti L, Caravaca-Mora R, Carbone A, Carcedo Salgado L, Cardinale R, Cardini A, Carniti P, Carus L, Casais Vidal A, Caspary R, Casse G, Cattaneo M, Cavallero G, Cavallini V, Celani S, Celestino I, Cesare S, Chadwick AJ, Chahrour I, Charles M, Charpentier P, Chatziaet al., 2026,

Search for the Lepton-Flavor Violating Decays B^{+}→π^{+}μ^{±}e^{∓}.

, Phys Rev Lett, Vol: 137

The first search for the lepton-flavor violating decays B^{+}→π^{+}μ^{±}e^{∓} in proton-proton collisions is presented, using data collected by the LHCb experiment between 2011 and 2018, corresponding to an integrated luminosity of 9 fb^{-1}. No significant signal is observed and an upper limit on the branching fraction is set at B(B^{+}→π^{+}μ^{±}e^{∓})<1.8×10^{-9} at the 90% confidence level, 2 orders of magnitude more restrictive than the most stringent upper limit to date. This is the first constraint on lepton-flavor violating b→d quark transitions at the LHC and also sets the most stringent upper limits to date on b→dμ^{±}e^{∓} transitions. Limits on left-handed and scalar scenarios beyond the standard model are also reported.

Journal article

Hayrapetyan A, Makarenko V, Tumasyan A, Adam W, Benato L, Bergauer T, Dragicevic M, Hussain PS, Jeitler M, Krammer N, Li A, Liko D, Matthewman M, Schieck J, Schöfbeck R, Shooshtari M, Sonawane M, Van Den Bossche N, Waltenberger W, Wulz C-E, Janssen T, Kwon H, Ocampo Henao D, Van Laer T, Van Mechelen P, Ahmadi D, Bierkens J, Breugelmans N, DHondt J, Dansana S, De Moor A, Delcourt M, Gupta C, Heyen F, Hong Y, Kashko P, Lowette S, Makarenko I, Nandakumar S, Tavernier S, Tytgat M, Van Onsem GP, Van Putte S, Vannerom D, Beshr A, Bilin B, Caviglia Roman F, Clerbaux B, Das AK, De Bruyn I, De Lentdecker G, Ducarme E, Evard H, Favart L, Khalilzadeh A, Malara A, Shahzad MA, Sharma A, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, Zhang F, Cauwels A, De Coen M, Dobur D, Giordano C, Gokbulut G, Kaspar K, Kavtaradze D, Marckx D, Skovpen K, Tomaru AM, van der Linden J, Vandenbroeck J, Aarup Petersen H, Bein S, Benecke A, Bethani A, Bruno G, Cappati A, De Favereau De Jeneret J, Delaere C, Gameiro Casalinho F, Giammanco A, Guzel AO, Lemaitre V, Lidrych J, Malek P, Turkcapar S, Alves GA, Barroso Ferreira Filho M, Coelho E, Hensel C, Matos Figueiredo D, Menezes De Oliveira T, Mora Herrera C, Rebello Teles P, Soeiro M, Tonelli Manganote EJ, Vilela Pereira A, Aldá Júnior WL, Brandao Malbouisson H, Carvalho W, Chinellato J, Costa Reis M, Da Costa EM, Da Silveira GG, De Jesus Damiao D, Fonseca De Souza S, Gomes De Souza R, Jesus SS, Laux Kuhn T, Maslova K, Mota Amarilo K, Mundim L, Nogima H, Pinheiro JP, Santoro A, Sznajder A, Thiel M, Torres Da Silva De Araujo F, Bernardes CA, Calligaris L, Damas F, Tomei TRFP, Gregores EM, Lopes Da Costa B, Maietto Silverio I, Mercadante PG, Novaes SF, Padula SS, Scheurer V, Aleksandrov A, Antchev G, Danev P, Hadjiiska R, Iaydjiev P, Shopova M, Sultanov G, Dimitrov A, Litov L, Pavlov B, Petkov P, Petrov A, Keshri S, Laroze D, Meena M, Thakur S, Brooks W, Cheng T, Javaid T, Wang L, Yuan L, Gu J, Hu Z, Liang Z, Liu J, Wang X, Wang Y, Yang H, Zhanet al., 2026,

Search for a new resonance decaying to a Higgs boson and a scalar boson in events with two <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mi>b</mml:mi> </mml:math> jets and two <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mi>Z</mml:mi> </mml:math> bosons in proton-proton collisions at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> <mml:mo>=</mml:mo> <mml:mn>13</mml:mn> <mml:mtext> </mml:mtext> <mml:mtext> </mml:mtext> <mml:mi>TeV</mml:mi> </mml:math>

, Physical Review D, Vol: 114, ISSN: 2470-0010

<jats:p> A search is performed for a new resonance <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"> <a:mi>X</a:mi> </a:math> decaying into a Higgs boson and a new scalar boson <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"> <c:mi>Y</c:mi> </c:math> ( <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"> <e:mi>H</e:mi> <e:mi>Y</e:mi> </e:math> ) including the case where <g:math xmlns:g="http://www.w3.org/1998/Math/MathML" display="inline"> <g:mi>Y</g:mi> </g:math> is assumed to be a second Higgs boson ( <i:math xmlns:i="http://www.w3.org/1998/Math/MathML" display="inline"> <i:mi>H</i:mi> <i:mi>H</i:mi> </i:math> ), using proton-proton collision data collected at <k:math xmlns:k="http://www.w3.org/1998/Math/MathML" display="inline"> <k:msqrt> <k:mi>s</k:mi> </k:msqrt> <k:mo>=</k:mo> <k:mn>13</k:mn> <k:mtext> </k:mtext> <k:mtext> </k:mtext> <k:mi>TeV</k:mi> </k:math> , c

Journal article

Gevorgyan A, Hayrapetyan A, Makarenko V, Tumasyan A, Adam W, Benato L, Bergauer T, Dragicevic M, Gundacker S, Guven AK, Hussain PS, Jeitler M, Krammer N, Li A, Liko D, Matthewman M, Schieck J, Schöfbeck R, Shooshtari M, Sonawane M, Van Den Bossche N, Waltenberger W, Wulz C-E, Janssen T, Ocampo Henao D, Van Laer T, Van Mechelen P, Ahmadi D, Bierkens J, Breugelmans N, Dansana S, De Moor A, Delcourt M, Duponcheel S, Gupta C, Heyen F, Hong Y, Kang K, Kashko P, Lowette S, Makarenko I, Nandakumar S, Tavernier S, Tytgat M, Van Onsem GP, Van Putte S, Wybouw T, Beshr A, Bilin B, Caviglia Roman F, Clerbaux B, Das AK, De Bruyn I, De Lentdecker G, Ducarme E, Evard H, Favart L, Kalaitzidou I, Khalilzadeh A, Malara A, Shahzad MA, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, Yuan C, Zhang F, Cauwels A, De Coen M, Dobur D, Giordano C, Gokbulut G, Kaspar K, Kavtaradze D, Marckx D, Mehta A, Skovpen K, Tomaru AM, van der Linden J, Vandenbroeck J, Aarup Petersen H, Benecke A, Bethani A, Cappati A, De Favereau De Jeneret J, Delaere C, Gameiro Casalinho F, Giammanco A, Guzel AO, Hussain M, Lawrence Z, Lidrych J, Malek P, Turkcapar S, Alves GA, Barroso Ferreira Filho M, Coelho E, Gonçalves Sales MV, Hensel C, Matos Figueiredo D, Menezes De Oliveira T, Mora Herrera C, Rebello Teles P, Soeiro M, Tonelli Manganote EJ, Vilela Pereira A, Aldá Júnior WL, Brandao Malbouisson H, Carvalho W, Chinellato J, Correia Silva G, Costa Reis M, Da Costa EM, Da Silva Dalto D, Da Silveira GG, De Jesus Damiao D, Fonseca De Souza S, Gomes De Souza R, Jesus SS, Laux Kuhn T, Maslova K, Mota Amarilo K, Mundim L, Nogima H, Pinheiro JP, Santoro A, Sznajder A, Thiel M, Torres Da Silva De Araujo F, Torres Machado D, Bernardes CA, Calligaris L, Carvalho Leite J, Coelho MP, Damas F, Fernandez Perez Tomei TR, Gregores EM, Lopes Da Costa B, Maietto Silverio I, Mercadante PG, Novaes SF, Padula SS, Scheurer V, Aleksandrov A, Antchev G, Danev P, Hadjiiska R, Iaydjiev P, Shopova M, Sultanov G, Dimitrov A, Litov L Pet al., 2026,

Search for Higgs boson pair production in the $$ \mathrm{b}\overline{\mathrm{b}}\mathrm{WW} $$ decay channel with two leptons in the final state using proton-proton collision data at $$ \sqrt{s}=13.6 $$ TeV

, Journal of High Energy Physics, Vol: 2026

<jats:title> A <jats:sc>bstract</jats:sc> </jats:title> <jats:p> A search for Higgs boson pair production is presented, targeting final states where one Higgs boson decays to a bottom quark-antiquark pair and the other Higgs boson decays to two W bosons, both of which decay leptonically, to an electron or a muon, and a neutrino. For the first time, the search is conducted with proton-proton collision data from the LHC at <jats:inline-formula> <jats:alternatives> <jats:tex-math>$$ \sqrt{s}=13.6 $$</jats:tex-math> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> <mml:mo>=</mml:mo> <mml:mn>13.6</mml:mn> </mml:math> </jats:alternatives> </jats:inline-formula> TeV, recorded with the CMS detector in 2022 and 2023 and corresponding to an integrated luminosity of 62 fb <jats:sup> <jats:italic>−</jats:italic> 1 </jats:sup> . The results are consistent with the standard model predictions. An upper limit of 12 <jats:italic>.</jats:italic> 0 times the standard model prediction at 95% confidence level is set on the Higgs boson pair production cross section, with an expected limit of 18 <jats:italic>.</jats:italic> 5. The results are also used to constrain the strength of the trilinear self-

Journal article

Hayrapetyan A, Makarenko V, Tumasyan A, Adam W, Benato L, Bergauer T, Dragicevic M, Hussain PS, Jeitler M, Krammer N, Li A, Liko D, Matthewman M, Schieck J, Schöfbeck R, Shooshtari M, Sonawane M, Waltenberger W, Wulz CE, Janssen T, Kwon H, Ocampo Henao D, Van Laer T, Van Mechelen P, Bierkens J, Breugelmans N, DHondt J, Dansana S, De Moor A, Delcourt M, Heyen F, Hong Y, Kashko P, Lowette S, Makarenko I, Müller D, Tavernier S, Tytgat M, Van Onsem GP, Van Putte S, Vannerom D, Bilin B, Clerbaux B, Das AK, De Bruyn I, De Lentdecker G, Evard H, Favart L, Gianneios P, Khalilzadeh A, Khan FA, Malara A, Shahzad MA, Sharma A, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, Zhang F, De Coen M, Dobur D, Giordano C, Gokbulut G, Kaspar K, Kavtaradze D, Marckx D, Skovpen K, Tomaru AM, Van Den Bossche N, van der Linden J, Vandenbroeck J, Aarup Petersen H, Bein S, Benecke A, Bethani A, Bruno G, Cappati A, De Favereau De Jeneret J, Delaere C, Gameiro Casalinho F, Giammanco A, Guzel AO, Lemaitre V, Lidrych J, Malek P, Mastrapasqua P, Turkcapar S, Alves GA, Barroso Ferreira Filho M, Coelho E, Hensel C, Matos Figueiredo D, Menezes De Oliveira T, Mora Herrera C, Rebello Teles P, Soeiro M, Tonelli Manganote EJ, Vilela Pereira A, Aldá Júnior WL, Brandao Malbouisson Het al., 2026,

Search for soft unclustered energy patterns produced in association with a W or Z boson in proton-proton collisions at s=13TeV

, Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, Vol: 879, ISSN: 0370-2693

A search for a Higgs boson produced in association with a W or Z boson and decaying via a soft unclustered energy pattern (SUEP) is presented. The analysis is based on proton-proton collision data corresponding to an integrated luminosity of 138fb−1 collected between 2016 and 2018 at the LHC. Final states with a leptonic W or Z boson decay associated with a high multiplicity of low-momentum charged particles are explored for the first time. The results show no significant excess over the standard model background expectation. Limits are set on the production cross section of a Higgs boson that decays to a SUEP, for a range of parameters of the SUEP model. Material is provided to facilitate further interpretation of the results.

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Journal article

, 2026,

Machine-learning techniques for model-independent searches in dijet final states

, Machine Learning: Science and Technology, Vol: 7, Pages: 045008-045008

<jats:title>Abstract</jats:title> <jats:p> Anomaly detection methods used in a recent search for new phenomena by CMS at the CERN LHC are presented. The methods use machine learning to detect anomalous jets produced in the decay of new massive particles without depending on a specific theory model. The effectiveness of these approaches in enhancing sensitivity to various simulated signal samples is studied and compared using data collected in proton–proton collisions at a center-of-mass energy of 13 <jats:inline-formula> <jats:tex-math> </jats:tex-math> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mrow> <mml:mrow> <mml:mstyle scriptlevel="0"/> <mml:mtext>TeV</mml:mtext> </mml:mrow> </mml:mrow> </mml:math> </jats:inline-formula> . In an example analysis, the capabilities of anomaly detection methods are further demonstrated by identifying large-radius jets consistent with Lorentz-boosted hadronically decaying top quarks in a model-agnostic framework. </jats:p>

Journal article

Waiton J, Bateman J, Evans JJ, Gunnar Finnerud O, Gramellini E, Guenette R, Guzowski P, Hergenhan A, Kedziora A, McCann M, Söldner-Rembold Set al., 2026,

A sterile-neutrino search using data from the MicroBooNE liquid-argon time projection chamber performed in an undergraduate teaching laboratory

, European Journal of Physics, Vol: 47, ISSN: 0143-0807

Fundamental particle physics is a key part of an undergraduate physics curriculum, but can be challenging to incorporate into teaching laboratories. We present an undergraduate laboratory experiment that enables students to work with real data from the MicroBooNE liquid-argon time projection chamber to search for the existence of a sterile neutrino: a new, fourth, neutrino state. This search has galvanised physicists for decades, as the existence of sterile neutrinos could play a critical role in understanding fundamental processes in the early Universe, provide viable dark matter candidates, and offer a natural explanation for the origin of neutrino masses. From an experimental point of view, anomalies observed in several neutrino experiments provide tantalising hints of their existence. The analysis presented here, whilst based on real data, has been adapted as a pedagogical tool for an undergraduate teaching laboratory, in which students are asked to develop an understanding of neutrino oscillation theory, analyse a MicroBooNE data sample, and apply statistical methods to search for a potential sterile neutrino. The analysis incorporates machine learning techniques to improve event classification. Students are encouraged to explore these and other methods to optimise their results.

Abstract
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Journal article

Hayrapetyan A, Makarenko V, Tumasyan A, Adam W, Andrejkovic JW, Benato L, Bergauer T, Dragicevic M, Giordano C, Hussain PS, Jeitler M, Krammer N, Li A, Liko D, Matthewman M, Mikulec I, Schieck J, Schöfbeck R, Schwarz D, Shooshtari M, Sonawane M, Waltenberger W, Wulz CE, Janssen T, Kwon H, Ocampo Henao D, Van Laer T, Van Mechelen P, Bierkens J, Breugelmans N, DHondt J, Dansana S, De Moor A, Delcourt M, Heyen F, Hong Y, Kashko P, Lowette S, Makarenko I, Müller D, Song J, Tavernier S, Tytgat M, Van Onsem GP, Van Putte S, Vannerom D, Bilin B, Clerbaux B, Das AK, De Bruyn I, De Lentdecker G, Evard H, Favart L, Gianneios P, Khalilzadeh A, Khan FA, Malara A, Shahzad MA, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, Zhang F, De Coen M, Dobur D, Gokbulut G, Knolle J, Marckx D, Skovpen K, Van Den Bossche N, van der Linden J, Vandenbroeck J, Wezenbeek L, Bein S, Benecke A, Bethani A, Bruno G, Cappati A, De Favereau De Jeneret J, Delaere C, Giammanco A, Guzel AO, Lemaitre V, Lidrych J, Malek P, Mastrapasqua P, Turkcapar S, Alves GA, Barroso Ferreira Filho M, Coelho E, Hensel C, Menezes De Oliveira T, Mora Herrera C, Rebello Teles P, Soeiro M, Tonelli Manganote EJ, Vilela Pereira A, Aldá Júnior WL, Brandao Malbouisson H, Carvalho Wet al., 2026,

Search for a boosted Higgs boson decaying to bottom quark pairs in association with a W or Z boson in proton-proton collisions at s=13TeV

, Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, Vol: 879, ISSN: 0370-2693

A search is conducted for standard model Higgs bosons with large transverse momentum ( p <inf>T</inf>) decaying to bottom quark pairs and produced in association with a hadronically decaying W or Z boson at the LHC. The result is based on a dataset of proton-proton collisions at a center-of-mass energy of 13 TeVcollected with the CMS detector in 2016–2018, corresponding to an integrated luminosity of 138fb−1. Boosted Higgs, W, and Z boson decays are reconstructed using large-radius jets with p <inf>T</inf> > 450 GeV and identified with heavy-flavor classifiers based on a graph convolutional neural network. The observed signal strength relative to the standard model expectation is μ=0.72<inf>−0.71</inf>+0.75 including statistical and systematic uncertainties.

Abstract
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Journal article

Aaij R, Abdelfatah M, Abdelmotteleb ASW, Abellan Beteta C, Abudinén F, Ackernley T, Adefisoye AA, Adeva B, Adinolfi M, Adlarson P, Agapopoulou C, Aidala CA, Ajaltouni Z, Akar S, Akiba K, Albicocco P, Albrecht J, Aleksiejunas R, Alessio F, Alvarez Cartelle P, Amalric R, Amato S, Amey JL, Amhis Y, An L, Anderlini L, Andersson M, Andreola P, Andreotti M, Andres Estrada S, Anelli A, Ao D, Arata C, Archilli F, Areg Z, Argenton M, Arguedas Cuendis S, Arnone L, Artuso M, Aslanides E, Ataíde Da Silva R, Atzeni M, Audurier B, Authier JA, Bacher D, Bachiller Perea I, Bachmann S, Bachmayer M, Back JJ, Bai ZB, Baladron Rodriguez P, Balagura V, Balboni A, Baldini W, Baldwin Z, Balzani L, Bao H, Baptista de Souza Leite J, Barbero Pretel C, Barbetti M, Barbosa IR, Barlow RJ, Barnyakov M, Barsuk S, Barter W, Bartz J, Bashir S, Batsukh B, Battista PB, Bavarchee A, Bay A, Beck A, Becker M, Bedeschi F, Bediaga IB, Behling NA, Belin S, Bellavista A, Belov I, Belyaev I, Benane G, Bencivenni G, Ben-Haim E, Bernet R, Bertolin A, Betti F, Bex J, Bezshyyko O, Bhattacharya S, Bieker MS, Biesuz NV, Biolchini A, Birch M, Bishop FCR, Bitadze A, Bizzeti A, Blake T, Blanc F, Blank JE, Blusk S, Boelhauve JA, Boente Garcia O, Boettcher T, Bohare A, Bolognani C, Bolzonella R, Bonacci RB, Bordelius A, Borgato F, Borghi S, Borsato M, Borsuk JT, Bottalico E, Bouchiba SA, Bovill M, Bowcock TJV, Boyer A, Bozzi C, Brandenburg JD, Brea Rodriguez A, Breer N, Breitfeld C, Brodzicka J, Brown J, Brundu D, Buchanan E, Burgos Marcos M, Burr C, Buti C, Butter JS, Buytaert J, Byczynski W, Cadeddu S, Cai H, Cai Y, Caillet A, Calabrese R, Calefice L, Calvi M, Calvo Gomez M, Camargo Magalhaes P, Cambon Bouzas JI, Campana P, Campos AC, Campoverde Quezada AF, Cao Y, Capelli S, Caporale M, Capriotti L, Caravaca-Mora R, Carbone A, Carcedo Salgado L, Cardinale R, Cardini A, Carniti P, Carus L, Casais Vidal A, Caspary R, Casse G, Cattaneo M, Cavallero G, Cavallini V, Celani S, Celestino I, Cesare S, Chadwick AJ, Chahrour Iet al., 2026,

Test of Lepton Flavor Universality with B^{0}→K^{*0}ℓ^{+}ℓ^{-} Decays at Large Dilepton Invariant Mass.

, Phys Rev Lett, Vol: 137

Muon-electron universality is tested in B^{0}→K^{*0}ℓ^{+}ℓ^{-} decays, in the dilepton-invariant-mass region above the ψ(2S) resonance. The analysis uses beauty mesons produced in proton-proton collisions recorded by the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV, corresponding to an integrated luminosity of 9 fb^{-1}. The ratio of branching fractions between the muon and electron channels R_{K^{*0}} is measured to be 1.08_{-0.12}^{+0.14}(stat)±0.07(syst) for a dilepton-invariant-mass squared above 14.0 GeV^{2}/c^{4}, consistent with the standard model prediction. This result represents the most precise measurement of R_{K^{*0}} in this region and the first such measurement performed at a hadron collider.

Journal article

Aaij R, Abdelmotteleb ASW, Abellan Beteta C, Abudinén F, Ackernley T, Adefisoye AA, Adeva B, Adinolfi M, Adlarson P, Agapopoulou C, Aidala CA, Ajaltouni Z, Akar S, Akiba K, Akthar M, Albicocco P, Albrecht J, Aleksiejunas R, Alessio F, Alvarez Cartelle P, Amalric R, Amato S, Amey JL, Amhis Y, An L, Anderlini L, Andersson M, Andreola P, Andreotti M, Andres Estrada S, Anelli A, Ao D, Arata C, Archilli F, Areg Z, Argenton M, Arguedas Cuendis S, Arnone L, Artamonov A, Artuso M, Aslanides E, Ataíde Da Silva R, Atzeni M, Audurier B, Authier JA, Bacher D, Bachiller Perea I, Bachmann S, Bachmayer M, Back JJ, Baladron Rodriguez P, Balagura V, Balboni A, Baldini W, Baldwin Z, Balzani L, Bao H, Baptista de Souza Leite J, Barbero Pretel C, Barbetti M, Barbosa IR, Barlow RJ, Barnyakov M, Barsuk S, Barter W, Bartz J, Bashir S, Batsukh B, Battista PB, Bavarchee A, Bay A, Beck A, Becker M, Bedeschi F, Bediaga IB, Behling NA, Belin S, Bellavista A, Belous K, Belov I, Belyaev I, Benane G, Bencivenni G, Ben-Haim E, Berezhnoy A, Bernet R, Bernet Andres S, Bertolin A, Betti F, Bex J, Bezshyyko O, Bhattacharya S, Bieker MS, Biesuz NV, Biolchini A, Birch M, Bishop FCR, Bitadze A, Bizzeti A, Blake T, Blanc F, Blank JE, Blusk S, Bocharnikov V, Boelhauve JA, Boente Garcia O, Boettcher T, Bohare A, Boldyrev A, Bolognani C, Bolzonella R, Bonacci RB, Bondar N, Bordelius A, Borgato F, Borghi S, Borsato M, Borsuk JT, Bottalico E, Bouchiba SA, Bovill M, Bowcock TJV, Boyer A, Bozzi C, Brandenburg JD, Brea Rodriguez A, Breer N, Brodzicka J, Brown J, Brundu D, Buchanan E, Burgos Marcos M, Burke AT, Burr C, Buti C, Butter JS, Buytaert J, Byczynski W, Cadeddu S, Cai H, Cai Y, Caillet A, Calabrese R, Calderon Ramirez S, Calefice L, Calvi M, Calvo Gomez M, Camargo Magalhaes P, Cambon Bouzas JI, Campana P, Campoverde Quezada AF, Cao Y, Capelli S, Caporale M, Capriotti L, Caravaca-Mora R, Carbone A, Carcedo Salgado L, Cardinale R, Cardini A, Carniti P, Carus L, Casais Vidal A, Caspary R, Casse G, Cattaneo Met al., 2026,

Evidence for the Rare Decay B^{+}→Λ[over ¯]pμ^{+}μ^{-}.

, Phys Rev Lett, Vol: 137

A search for the rare decay B^{+}→Λ[over ¯]pμ^{+}μ^{-} is performed using proton-proton collision data recorded by the LHCb experiment at a center-of-mass energy of sqrt[s]=13 TeV, corresponding to an integrated luminosity of 5.4 fb^{-1}. An excess of events is found with respect to the background-only expectation, with a signal significance of 3.5 standard deviations, in the low invariant-mass region of m(Λ[over ¯]p)<2.8 GeV/c^{2}. The branching fraction is measured to be B_{low}(B^{+}→Λ[over ¯]pμ^{+}μ^{-})=(1.70_{-0.56}^{+0.65}(stat)±0.17(syst)±0.14(ext))×10^{-8}, where the last uncertainty is due to external inputs on B(B^{+}→J/ψΛ[over ¯]p)×B(J/ψ→μ^{+}μ^{-}). With no significant signal observed in the high m(Λ[over ¯]p) region above 2.8 GeV/c^{2}, an upper limit is set to be B_{high}(B^{+}→Λ[over ¯]pμ^{+}μ^{-})<2.8(3.7)×10^{-9} at the 90% (95%) confidence level.

Journal article

Aprile E, Aalbers J, Abe K, Adrover M, Ahmed Maouloud S, Althueser L, Andrieu B, Angelino E, Antón Martin D, Armbruster SR, Arneodo F, Baudis L, Bazyk M, Beligotti V, Bellagamba L, Biondi R, Bismark A, Boese K, Braun RM, Bruni G, Bruno G, Budnik R, Cai C, Capelli C, Cardoso JMR, Cimental Chávez AP, Colijn AP, Conrad J, Cuenca-García JJ, DAndrea V, Daniel Garcia LC, Decowski MP, Deisting A, Di Donato C, Di Gangi P, Diglio S, Eitel K, el Morabit S, Elleboro R, Elykov A, Ferella AD, Ferrari C, Fischer H, Flehmke T, Flierman M, Frankel R, Fuchs D, Fulgione W, Fuselli C, Gao F, Giacomobono R, Girard F, Glade-Beucke R, Grandi L, Grigat J, Guan H, Guida M, Gyorgy P, Hammann R, Hils C, Hoetzsch L, Hood NF, Iacovacci M, Itow Y, Jakob J, Joerg F, Kaminaga Y, Kara M, Kazama S, Kharbanda P, Kobayashi M, Koke D, Kooshkjalali K, Kopec A, Landsman H, Lang RF, Levinson L, Li A, Li I, Li S, Liang S, Liang Z, Lin Y-T, Lindemann S, Lindner M, Liu K, Liu M, Lombardi F, Lopes JAM, Lucchetti GM, Luce T, Ma Y, Macolino C, Madduri GC, Mahlstedt J, Marignetti F, Marrodán Undagoitia T, Martens K, Masbou J, Mastroianni S, Mazza V, Melchiorre A, Merz J, Messina M, Michel A, Miuchi K, Molinario A, Moriyama S, Murra M, Müller J, Ni K, Oba Ishikawa CT, Oberlack U, Ouahada S, Paetsch B, Pan Y, Pellegrini Q, Peres R, Pienaar J, Pierre M, Plante G, Pollmann TR, Pompa F, Prajapati A, Principe L, Qin J, Ramírez García D, Ravindran A, Razeto A, Singh R, Sanchez L, dos Santos JMF, Sarnoff I, Sartorelli G, Schreiner J, Schulte P, Schulze Eißing H, Schumann M, Scotto Lavina L, Selvi M, Semeria F, Semler FN, Shagin P, Shi S, Simgen H, Song Z, Stevens A, Szyszka C, Takeda A, Takeuchi Y, Tan P-L, Thers D, Trinchero G, Tunnell CD, Valerius K, Vecchi S, Vetter S, Volta G, von Krosigk B, Weinheimer C, Weiss M, Wenz D, Wittweg C, Wu VHS, Xing Y, Xu D, Xu Z, Yamashita M, Yang J, Yang L, Ye J, Yoshida M, Yuan L, Zavattini G, Zhao Y, Zhong M, Zhu Tet al., 2026,

Light Dark Matter Search with 7.8 Tonne-Year of Ionization-Only Data in XENONnT

, Physical Review Letters, Vol: 137, ISSN: 0031-9007

<jats:p> We report on a blinded search for dark matter (DM) using ionization-only (S2-only) signals in XENONnT with a total exposure of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"> <a:mrow> <a:mn>7.83</a:mn> <a:mtext> </a:mtext> <a:mtext> </a:mtext> <a:mtext>Tonne-year</a:mtext> </a:mrow> </a:math> over 579 days in three science runs. Dedicated background suppression techniques and the first complete S2-only background model in XENONnT provide sensitivity to nuclear recoils of <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"> <c:mrow> <c:mo stretchy="false">[</c:mo> <c:mn>0.5</c:mn> <c:mo>,</c:mo> <c:mn>5.0</c:mn> <c:mo stretchy="false">]</c:mo> <c:mtext> </c:mtext> <c:mtext> </c:mtext> <c:msub> <c:mrow> <c:mi>keV</c:mi> </c:mrow> <c:mrow> <c:mi>nr</c:mi> </c:mrow> </c:msub> </c:mrow> </c:math> and electronic recoils of <g:math xmlns:g="http://www.w3.org/1998/Math/MathML" display="inline"&

Journal article

Abbaslu S, Alrahman FA, Abud AA, Acciarri R, Accorsi LP, Acero MA, Adames MR, Adamov G, Adamowski M, Adriano C, Akbar F, Alemanno F, Alex NS, Allison K, Alrashed M, Alton A, Alvarez R, Alves T, Aman A, Amar H, Amedo P, Anderson J, Andrade DA, Andreopoulos C, Andreotti M, Andrews MP, Andrianala F, Andringa S, Anjarazafy F, Ansarifard S, Antic D, Antoniassi M, Aranda-Fernandez A, Araya-Santander T, Arellano L, Diaz EA, Arroyave MA, Arteropons M, Asaadi J, Ascencio M, Ashkenazi A, Asner D, Asquith L, Atkin E, Auguste D, Aurisano A, Aushev V, Autiero D, Gómez DÁ, Azam MB, Azfar F, Back A, Back JJ, Bae Y, Bagaturia I, Bagby L, Baigarashev D, Balasubramanian S, Balboni A, Baldi P, Baldini W, Baldonedo J, Baller B, Bambah B, Barao F, Barbu D, Barenboim G, Alzás PB, Barker GJ, Barkhouse W, Barr G, Barros A, Barros N, Barrow D, Barrow JL, Basharina-Freshville A, Bashyal A, Basque V, Bassani M, Basu D, Batchelor C, Bathe-Peters L, Battat JBR, Battisti F, Bautista J, Bay F, Alba JLLB, Beacom JF, Bechetoille E, Behera B, Belchior E, Bell B, Bell G, Bellantoni L, Bellettini G, Bellini V, Beltramello O, Belyaev A, Montiel CB, Benjamin D, Neves FB, Berger J, Berkman S, Bermudez J, Bernal J, Bernardini P, Bersani A, Bertholet E, Bertolini E, Bertolucci S, Betancourt M, Rodríguez AB, Bezawada Y, Bezerra AT, Bhat A, Bhatnagar V, Bhattacharjee M, Bhattacharjee S, Bhattacharya M, Bhuller S, Bhuyan B, Biagi S, Bian J, Biery K, Bilki B, Bishai M, Bishop P, Blake A, Blaszczyk FD, Blazey GC, Blucher E, Bodek A, Bogart B, Boissevain J, Bolognesi S, Bolton T, Bomben L, Bonesini M, Bonilla-Diaz C, Booth A, Boran F, Borden C, Merlo RB, Bostan N, Botogoske G, Bottino B, Bouet R, Boza J, Bracinik J, Brahma B, Brailsford D, Bramati F, Branca A, Brandt A, Bremer J, Brice SJ, Brio V, Brizzolari C, Bromberg C, Brooke J, Bross A, Brunetti G, Brunetti MB, Buchanan N, Budd H, Buergi J, Bundock A, Burgardt D, Butchart S, V GC, Calabrese R, Calabrese R, Calcutt J, Calivers L, Calvo E, Caminata A, Caminoet al., 2026,

Reconstruction of atmospheric neutrinos in DUNE’s horizontal-drift far-detector module

, The European Physical Journal C, Vol: 86

<jats:title>Abstract</jats:title> <jats:p>This paper reports on the capabilities in reconstructing and identifying atmospheric neutrino interactions in one of the Deep Underground Neutrino Experiment’s (DUNE) far detector modules, a liquid argon time projection chamber (LArTPC) with horizontal drift (FD-HD) of ionization electrons. The reconstruction is based upon the workflow developed for DUNE’s long-baseline oscillation analysis, with some necessary machine-learning models’ retraining and the addition of features relevant only to atmospheric neutrinos such as the neutrino direction reconstruction. Where relevant, the impact of the detection of the charged particles of the hadronic system is emphasized, and comparisons are carried out between the case when lepton-only information is considered in the reconstruction (as is the case for many neutrino oscillation experiments), versus when all particles identified in the LArTPC were included. Three neutrino direction reconstruction methods have been developed and studied for the atmospheric analyses: using lepton-only information, using all reconstructed particles, and using only correlations from reconstructed hits. The results indicate that incorporating more than just lepton information significantly improves the resolution of both neutrino direction and energy reconstruction. The angle reconstruction algorithms developed in this work result in no strong dependence on particle direction for reconstruction efficiencies or neutrino flavor identification. This comprehensive review of the reconstruction of atmospheric neutrinos in DUNE’s FD-HD LArTPC is the first step towards developing a first neutrino oscillation sensitivity analysis, which will ready DUNE for its first measurements.</jats:p>

Journal article

Araujo GR, Baudis L, Bowden N, Chapman J, Erickson A, Guerrero Perez M, Hecht AA, Hedges SC, Huber P, Ivanov V, Jovanovic I, Khodaparast GA, Magill BA, Mateos JM, Morrison M, Smith NWG, Stengel P, Surani S, Vladimirov N, Walkup K, Wittweg C, Zhang Xet al., 2026,

Nuclear recoil detection with color centers in bulk lithium fluoride

, The European Physical Journal C, Vol: 86

<jats:title>Abstract</jats:title> <jats:p>We present initial results on the detection of nuclear recoils in lithium fluoride (LiF) through the fluorescence of color centers created by particle interactions in the crystal lattice. Using light-sheet fluorescence microscopy, we image nuclear recoil tracks from both fast and thermal neutron interactions deep within a cubic-centimeter-scale sample. Automated three-dimensional feature extraction based on machine-learning tools enables the identification and classification of individual events. We observe that the fluorescence response of LiF to gamma irradiation is strongly suppressed, by a factor of 30–50 compared to neutron exposure, demonstrating intrinsic insensitivity to electromagnetic backgrounds. The observed and simulated event characteristics are consistent, including their number, size, and topology. These results establish the feasibility of LiF as a scalable detection medium for rare nuclear-recoil events and constitute a first step toward 10–1000 g scale detectors with single-event sensitivity for applications in reactor-neutrino detection, neutron spectroscopy, and dark matter searches.</jats:p>

Journal article

Hayrapetyan A, Makarenko V, Tumasyan A, Adam W, Benato L, Bergauer T, Dragicevic M, Hussain PS, Jeitler M, Krammer N, Li A, Liko D, Matthewman M, Schieck J, Schöfbeck R, Shooshtari M, Sonawane M, Van Den Bossche N, Waltenberger W, Wulz C-E, Janssen T, Kwon H, Ocampo Henao D, Van Laer T, Van Mechelen P, Ahmadi D, Bierkens J, Breugelmans N, DHondt J, Dansana S, De Moor A, Delcourt M, Gupta C, Heyen F, Hong Y, Kashko P, Lowette S, Makarenko I, Nandakumar S, Tavernier S, Tytgat M, Van Onsem GP, Van Putte S, Vannerom D, Wybouw T, Beshr A, Bilin B, Caviglia Roman F, Clerbaux B, Das AK, De Bruyn I, De Lentdecker G, Ducarme E, Evard H, Favart L, Khalilzadeh A, Malara A, Shahzad MA, Sharma A, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, Zhang F, Cauwels A, De Coen M, Dobur D, Giordano C, Gokbulut G, Kaspar K, Kavtaradze D, Marckx D, Skovpen K, Tomaru AM, van der Linden J, Vandenbroeck J, Aarup Petersen H, Bein S, Benecke A, Bethani A, Bruno G, Cappati A, De Favereau De Jeneret J, Delaere C, Gameiro Casalinho F, Giammanco A, Guzel AO, Lemaitre V, Lidrych J, Malek P, Turkcapar S, Alves GA, Barroso Ferreira Filho M, Coelho E, Gonçalves Sales MV, Hensel C, Matos Figueiredo D, Menezes De Oliveira T, Mora Herrera C, Rebello Teles P, Soeiro M, Tonelli Manganote EJ, Vilela Pereira A, Aldá Júnior WL, Brandao Malbouisson H, Carvalho W, Chinellato J, Costa Reis M, Da Costa EM, Da Silva Dalto D, Da Silveira GG, De Jesus Damiao D, Fonseca De Souza S, Gomes De Souza R, Jesus SS, Laux Kuhn T, Maslova K, Mota Amarilo K, Mundim L, Nogima H, Pinheiro JP, Santoro A, Sznajder A, Thiel M, Torres Da Silva De Araujo F, Bernardes CA, Calligaris L, Carvalho Leite J, Damas F, Fernandez Perez Tomei TR, Gregores EM, Lopes Da Costa B, Maietto Silverio I, Mercadante PG, Novaes SF, Padula SS, Scheurer V, Aleksandrov A, Antchev G, Danev P, Hadjiiska R, Iaydjiev P, Shopova M, Sultanov G, Dimitrov A, Litov L, Pavlov B, Petkov P, Petrov A, Keshri S, Laroze D, Meena M, Thakur S, Brooks W, Cheng T, Jaet al., 2026,

Search for Higgs boson production at high transverse momentum in the WW decay channel in proton-proton collisions at $$ \sqrt{s}=13 $$ TeV

, Journal of High Energy Physics, Vol: 2026

<jats:title> A <jats:sc>bstract</jats:sc> </jats:title> <jats:p> A search for Higgs boson (H) production at high transverse momentum ( <jats:italic>p</jats:italic> <jats:sub>T</jats:sub> ) in the WW decay channel is presented. The analysis uses proton-proton collisions at <jats:inline-formula> <jats:alternatives> <jats:tex-math>$$ \sqrt{s}=13 $$</jats:tex-math> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> <mml:mo>=</mml:mo> <mml:mn>13</mml:mn> </mml:math> </jats:alternatives> </jats:inline-formula> TeV recorded by the CMS experiment in 2016–2018, corresponding to an integrated luminosity of 138 fb <jats:sup> <jats:italic>−</jats:italic> 1 </jats:sup> . The visible decay products of the Higgs boson are reconstructed as a single large-radius jet with one isolated lepton or none (1 <jats:italic>ℓ</jats:italic> and 0 <jats:italic>ℓ</jats:italic> , respectively; <jats:italic>ℓ</jats:italic> = e, <jats:italic>μ</jats:italic> ). The H-candidate jets are identified using an advanced transformer-

Journal article

Aaij R, Abdelmotteleb ASW, Beteta CA, Abudinén F, Ackernley T, Adefisoye AA, Adeva B, Adinolfi M, Adlarson P, Agapopoulou C, Aidala CA, Ajaltouni Z, Akar S, Akiba K, Akthar M, Albicocco P, Albrecht J, Aleksiejunas R, Alessio F, Cartelle PA, Amalric R, Amato S, Amey JL, Amhis Y, An L, Anderlini L, Andersson M, Andreola P, Andreotti M, Estrada SA, Anelli A, Ao D, Arata C, Archilli F, Areg Z, Argenton M, Cuendis SA, Arnone L, Artamonov A, Artuso M, Aslanides E, Da Silva RA, Atzeni M, Audurier B, Authier JA, Bacher D, Perea IB, Bachmann S, Bachmayer M, Back JJ, Bai ZB, Rodriguez PB, Balagura V, Balboni A, Baldini W, Baldwin Z, Balzani L, Bao H, Leite JBDS, Pretel CB, Barbetti M, Barbosa IR, Barlow RJ, Barnyakov M, Barsuk S, Barter W, Bartz J, Bashir S, Batsukh B, Battista PB, Bavarchee A, Bay A, Beck A, Becker M, Bedeschi F, Bediaga IB, Behling NA, Belin S, Bellavista A, Belous K, Belov I, Belyaev I, Benane G, Bencivenni G, Ben-Haim E, Berezhnoy A, Bernet R, Bertolin A, Betti F, Bex J, Bezshyyko O, Bhattacharya S, Bieker MS, Biesuz NV, Biolchini A, Birch M, Bishop FCR, Bitadze A, Bizzeti A, Blake T, Blanc F, Blank JE, Blusk S, Bocharnikov V, Boelhauve JA, Garcia OB, Boettcher T, Bohare A, Boldyrev A, Bolognani C, Bolzonella R, Bonacci RB, Bondar N, Bordelius A, Borgato F, Borghi S, Borsato M, Borsuk JT, Bottalico E, Bouchiba SA, Bovill M, Bowcock TJV, Boyer A, Bozzi C, Brandenburg JD, Rodriguez AB, Breer N, Brodzicka J, Brown J, Brundu D, Buchanan E, Marcos MB, Burr C, Buti C, Butter JS, Buytaert J, Byczynski W, Cadeddu S, Cai H, Cai Y, Caillet A, Calabrese R, Calefice L, Calvi M, Gomez MC, Magalhaes PC, Bouzas JIC, Campana P, Campos AC, Quezada AFC, Cao Y, Capelli S, Caporale M, Capriotti L, Caravaca-Mora R, Carbone A, Salgado LC, Cardinale R, Cardini A, Carniti P, Carus L, Vidal AC, Caspary R, Casse G, Cattaneo M, Cavallero G, Cavallini V, Celani S, Celestino I, Cesare S, Chadwick AJ, Chahrour I, Chang H, Charles M, Charpentier P, Chatzianagnostou E, Cheaib R, Chefdevet al., 2026,

Observation of CP Violation in B^{0}→J/ψρ(770)^{0} Decays.

, Phys Rev Lett, Vol: 137

The time-dependent CP asymmetry in B^{0}→J/ψρ(770)^{0} decays is measured using proton-proton collision data corresponding to an integrated luminosity of 6 fb^{-1}, collected with the LHCb detector at a center-of-mass energy of 13 TeV during the years 2015-2018. The CP-violation parameters for this process are determined to be 2β_{cc[over ¯]d}^{eff}=0.710±0.084±0.051 rad and |λ|=1.019±0.034±0.024, where the first uncertainty is statistical and the second systematic. This constitutes the first observation of time-dependent CP violation in B^{0}→J/ψρ(770)^{0} decays. Assuming approximate SU(3) flavor symmetry, these results are combined with the previous consistent LHCb measurement to set the most stringent constraint on the penguin contribution, Δϕ_{s}, to the CP-violating phase ϕ_{s} in B_{s}^{0}→J/ψϕ(1020) decays, yielding Δϕ_{s}=5.0±4.6 mrad.

Journal article

Hayrapetyan A, Makarenko V, Tumasyan A, Adam W, Andrejkovic JW, Benato L, Bergauer T, Dragicevic M, Giordano C, Hussain PS, Jeitler M, Krammer N, Li A, Liko D, Matthewman M, Mikulec I, Schieck J, Schöfbeck R, Schwarz D, Shooshtari M, Sonawane M, Waltenberger W, Wulz C-E, Janssen T, Kwon H, Ocampo Henao D, Van Laer T, Van Mechelen P, Bierkens J, Breugelmans N, DHondt J, Dansana S, De Moor A, Delcourt M, Heyen F, Hong Y, Kashko P, Lowette S, Makarenko I, Müller D, Song J, Tavernier S, Tytgat M, Van Onsem GP, Van Putte S, Vannerom D, Bilin B, Clerbaux B, Das AK, De Bruyn I, De Lentdecker G, Evard H, Favart L, Gianneios P, Khalilzadeh A, Khan FA, Malara A, Shahzad MA, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, Zhang F, De Coen M, Dobur D, Gokbulut G, Knolle J, Marckx D, Skovpen K, Tomaru AM, Van Den Bossche N, van der Linden J, Vandenbroeck J, Wezenbeek L, Bein S, Benecke A, Bethani A, Bruno G, Cappati A, De Favereau De Jeneret J, Delaere C, Gameiro Casalinho F, Giammanco A, Guzel AO, Lemaitre V, Lidrych J, Malek P, Mastrapasqua P, Turkcapar S, Alves GA, Barroso Ferreira Filho M, Coelho E, Hensel C, Menezes De Oliveira T, Mora Herrera C, Rebello Teles P, Soeiro M, Tonelli Manganote EJ, Vilela Pereira A, Aldá Júnior WL, Brandao Malbouisson H, Carvalho W, Chinellato J, Costa Reis M, Da Costa EM, Da Silveira GG, De Jesus Damiao D, Fonseca De Souza S, Gomes De Souza R, Jesus SS, Laux Kuhn T, Macedo M, Mota Amarilo K, Mundim L, Nogima H, Pinheiro JP, Santoro A, Sznajder A, Thiel M, Torres Da Silva De Araujo F, Bernardes CA, Damas F, Fernandez Perez Tomei TR, Gregores EM, Lopes Da Costa B, Maietto Silverio I, Mercadante PG, Novaes SF, Orzari B, Padula SS, Scheurer V, Aleksandrov A, Antchev G, Danev P, Hadjiiska R, Iaydjiev P, Shopova M, Sultanov G, Dimitrov A, Litov L, Pavlov B, Petkov P, Petrov A, Keshri S, Laroze D, Thakur S, Brooks W, Cheng T, Javaid T, Wang L, Yuan L, Hu Z, Liang Z, Liu J, Wang X, Yang H, Chen GM, Chen HS, Chen M, Chen Y, Hou Q, Hou X, Iemmi Fet al., 2026,

Search for exotic Higgs boson decays H → 𝒜𝒜 with 𝒜 → γγ in events with a semi-merged topology in proton-proton collisions at $$ \sqrt{s}=13 $$ TeV

, Journal of High Energy Physics, Vol: 2026

<jats:title> A <jats:sc>bstract</jats:sc> </jats:title> <jats:p> A search for exotic Higgs boson decays H <jats:italic>→</jats:italic> 𝒜𝒜, with 𝒜 → γγ is presented, using events with a semi-merged topology. One of the hypothetical particles, 𝒜, is assumed to decay promptly into a semi-merged diphoton system reconstructed as a single photon-like object, while the other 𝒜 decays into two resolved photons. The search is performed using proton-proton collision data collected by the CMS experiment at <jats:inline-formula> <jats:alternatives> <jats:tex-math>$$ \sqrt{s}=13 $$</jats:tex-math> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> <mml:mo>=</mml:mo> <mml:mn>13</mml:mn> </mml:math> </jats:alternatives> </jats:inline-formula> TeV, corresponding to an integrated luminosity of 138 fb <jats:sup> <jats:italic>−</jats:italic> 1 </jats:sup> . The data agree with the standard model background expectation. Upper limits are set on the product of the Higgs boson production cross section and the branching fraction, <jats:italic>σ</jats:italic> (pp <jats:italic>→</jats:italic> H) ℬ(H

Journal article

Aaij R, Abdelfatah M, Abdelmotteleb ASW, Abellan Beteta C, Abudinén F, Ackernley T, Adefisoye AA, Adeva B, Adinolfi M, Adlarson P, Agapopoulou C, Aidala CA, Akar S, Akiba K, Albicocco P, Albrecht J, Aleksiejunas R, Alessio F, Alvarez Cartelle P, Amato S, Amey JL, Amhis Y, An L, Anderlini L, Andersson M, Andreola P, Andreotti M, Andres Estrada S, Anelli A, Ao D, Arata C, Archilli F, Areg Z, Argenton M, Arguedas Cuendis S, Arnone L, Artuso M, Aslanides E, Ataíde Da Silva R, Atzeni M, Audurier B, Authier JA, Bacher D, Bachiller Perea I, Bachmann S, Bachmayer M, Back JJ, Bai ZB, Balagura V, Balboni A, Baldini W, Baldwin Z, Balzani L, Bao H, Baptista de Souza Leite J, Barbero Pretel C, Barbetti M, Barbosa IR, Barlow RJ, Barnyakov M, Baron S, Barsuk S, Barter W, Bartz J, Bashir S, Batsukh B, Battista PB, Bavarchee A, Bay A, Beck A, Becker M, Bedeschi F, Bediaga IB, Behling NA, Belin S, Bellavista A, Belov I, Belyaev I, Bencivenni G, Ben-Haim E, Berkey JLM, Bernet R, Bertolin A, Betti F, Bex J, Bezshyyko O, Bhattacharya S, Bieker MS, Biesuz NV, Biolchini A, Birch M, Bishop FCR, Bitadze A, Bizzeti A, Blake T, Blanc F, Blank JE, Blusk S, Boelhauve JA, Boente Garcia O, Boettcher T, Bohare A, Bolognani C, Bolzonella R, Bonacci RB, Bordelius A, Borgato F, Borghi S, Borsato M, Borsuk JT, Bottalico E, Bouchiba SA, Bovill M, Bowcock TJV, Boyer A, Bozzi C, Brandenburg JD, Brea Rodriguez A, Breer N, Breitfeld C, Brodzicka J, Brown J, Brundu D, Buchanan E, Burgos Marcos M, Burr C, Buti C, Butter JS, Buytaert J, Byczynski W, Cadeddu S, Cai H, Cai Y, Caillet A, Calabrese R, Calefice L, Calvi M, Calvo Gomez M, Camargo Magalhaes P, Cambon Bouzas JI, Campana P, Campos AC, Campoverde Quezada AF, Cao Y, Capelli S, Caporale M, Capriotti L, Caravaca-Mora R, Carbone A, Carcedo Salgado L, Cardinale R, Cardini A, Carniti P, Carus L, Casais Vidal A, Caspary R, Casse G, Cattaneo M, Cavallero G, Cavallini V, Celani S, Celestino I, Cesare S, Chadwick AJ, Chahrour I, Charles M, Charpentier P, Chatziaet al., 2026,

Observation of the Doubly Charmed Baryon Ξ_{cc}^{+} with the LHCb Run 3 Detector.

, Phys Rev Lett, Vol: 137

The first observation of the doubly charmed baryon Ξ_{cc}^{+} is reported through its decay to the Λ_{c}^{+}K^{-}π^{+} final state, with a statistical significance exceeding seven standard deviations. The observation is made using proton-proton collision data collected in 2024 with the LHCb Run 3 detector at a center-of-mass energy of 13.6 TeV, corresponding to a total integrated luminosity of 6.9 fb^{-1}. The Ξ_{cc}^{+} mass is measured to be 3619.97±0.83±0.26_{-1.30}^{+1.90} MeV/c^{2}, where the first uncertainty is statistical, the second is systematic, and the third is due to the unknown Ξ_{cc}^{+} lifetime, which is assumed to lie in the range 15-160 fs with a baseline value of 45 fs. The difference between the masses of the Ξ_{cc}^{+} and Ξ_{cc}^{++} baryons is determined to be -1.77±0.84±0.15_{-1.30}^{+1.90} MeV/c^{2}. This is the first observation of a new particle made with the LHCb Run 3 detector.

Journal article

Aaij R, Abdelmotteleb ASW, Abellan Beteta C, Abudinén F, Ackernley T, Adefisoye AA, Adeva B, Adinolfi M, Adlarson P, Agapopoulou C, Aidala CA, Ajaltouni Z, Akar S, Akiba K, Akthar M, Albicocco P, Albrecht J, Aleksiejunas R, Alessio F, Alvarez Cartelle P, Amalric R, Amato S, Amey JL, Amhis Y, An L, Anderlini L, Andersson M, Andreola P, Andreotti M, Andres Estrada S, Anelli A, Ao D, Arata C, Archilli F, Areg Z, Argenton M, Arguedas Cuendis S, Arnone L, Artamonov A, Artuso M, Aslanides E, Ataíde Da Silva R, Atzeni M, Audurier B, Authier JA, Bacher D, Bachiller Perea I, Bachmann S, Bachmayer M, Back JJ, Baladron Rodriguez P, Balagura V, Balboni A, Baldini W, Baldwin Z, Balzani L, Bao H, Baptista de Souza Leite J, Barbero Pretel C, Barbetti M, Barbosa IR, Barlow RJ, Barnyakov M, Barsuk S, Barter W, Bartz J, Bashir S, Batsukh B, Battista PB, Bay A, Beck A, Becker M, Bedeschi F, Bediaga IB, Behling NA, Belin S, Bellavista A, Belous K, Belov I, Belyaev I, Benane G, Bencivenni G, Ben-Haim E, Berezhnoy A, Bernet R, Bernet Andres S, Bertolin A, Betti F, Bex J, Bezshyyko O, Bhattacharya S, Bhom J, Bieker MS, Biesuz NV, Biolchini A, Birch M, Bishop FCR, Bitadze A, Bizzeti A, Blake T, Blanc F, Blank JE, Blusk S, Bocharnikov V, Boelhauve JA, Boente Garcia O, Boettcher T, Bohare A, Boldyrev A, Bolognani C, Bolzonella R, Bonacci RB, Bondar N, Bordelius A, Borgato F, Borghi S, Borsato M, Borsuk JT, Bottalico E, Bouchiba SA, Bovill M, Bowcock TJV, Boyer A, Bozzi C, Brandenburg JD, Brea Rodriguez A, Breer N, Brodzicka J, Brown J, Brundu D, Buchanan E, Burgos Marcos M, Burke AT, Burr C, Buti C, Butter JS, Buytaert J, Byczynski W, Cadeddu S, Cai H, Cai Y, Caillet A, Calabrese R, Calderon Ramirez S, Calefice L, Calvi M, Calvo Gomez M, Camargo Magalhaes P, Cambon Bouzas JI, Campana P, Campoverde Quezada AF, Cao Y, Capelli S, Caporale M, Capriotti L, Caravaca-Mora R, Carbone A, Carcedo Salgado L, Cardinale R, Cardini A, Carniti P, Carus L, Casais Vidal A, Caspary R, Casse G, Cattaneo M, Cavet al., 2026,

Comprehensive Analysis of the B^{0}→K^{*0}μ^{+}μ^{-} Decay.

, Phys Rev Lett, Vol: 137

An analysis of the B^{0}→K^{*0}(→K^{+}π^{-})μ^{+}μ^{-} decay is presented using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 8.4 fb^{-1}. The full set of CP-averaged and CP-asymmetric angular observables is determined in bins of the invariant mass squared of the dimuon system, as well as the branching fraction relative to the B^{0}→J/ψ(→μ^{+}μ^{-})K^{+}π^{-} decay. For the first time, the full set of observables pertaining to the K^{+}π^{-} S-wave contribution to the final state are presented and consideration is given to effects arising from the mass of the muons. The extracted CP-asymmetry observables show no significant deviations from zero. The measurements of the CP-averaged observables and the branching fractions continue to exhibit the pattern of tensions with the standard model predictions that have been seen in previous analyses that use part of the dataset considered in this Letter.

Journal article

Hayrapetyan A, Makarenko V, Tumasyan A, Adam W, Andrejkovic JW, Benato L, Bergauer T, Dragicevic M, Giordano C, Hussain PS, Jeitler M, Krammer N, Li A, Liko D, Mikulec I, Schieck J, Schöfbeck R, Schwarz D, Shooshtari M, Sonawane M, Waltenberger W, Wulz C-E, Janssen T, Kwon H, Ocampo Henao D, Van Laer T, Van Mechelen P, Bierkens J, Breugelmans N, DHondt J, Dansana S, De Moor A, Delcourt M, Heyen F, Hong Y, Kashko P, Lowette S, Makarenko I, Müller D, Song J, Tavernier S, Tytgat M, Van Onsem GP, Van Putte S, Vannerom D, Bilin B, Clerbaux B, Das AK, De Bruyn I, De Lentdecker G, Evard H, Favart L, Gianneios P, Khalilzadeh A, Khan FA, Malara A, Shahzad MA, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, Zhang F, De Coen M, Dobur D, Gokbulut G, Knolle J, Lambrecht L, Marckx D, Skovpen K, Van Den Bossche N, van der Linden J, Vandenbroeck J, Wezenbeek L, Bein S, Benecke A, Bethani A, Bruno G, Cappati A, De Favereau De Jeneret J, Delaere C, Giammanco A, Guzel AO, Lemaitre V, Lidrych J, Malek P, Mastrapasqua P, Turkcapar S, Alves GA, Barroso Ferreira Filho M, Coelho E, Hensel C, Menezes De Oliveira T, Mora Herrera C, Rebello Teles P, Soeiro M, Tonelli Manganote EJ, Vilela Pereira A, Aldá Júnior WL, Brandao Malbouisson H, Carvalho W, Chinellato J, Costa Reis M, Da Costa EM, Da Silveira GG, De Jesus Damiao D, Fonseca De Souza S, Gomes De Souza R, Jesus SS, Laux Kuhn T, Macedo M, Mota Amarilo K, Mundim L, Nogima H, Pinheiro JP, Santoro A, Sznajder A, Thiel M, Torres Da Silva De Araujo F, Bernardes CA, Tomei TRFP, Gregores EM, Lopes Da Costa B, Maietto Silverio I, Mercadante PG, Novaes SF, Orzari B, Padula SS, Scheurer V, Aleksandrov A, Antchev G, Danev P, Hadjiiska R, Iaydjiev P, Misheva M, Shopova M, Sultanov G, Dimitrov A, Litov L, Pavlov B, Petkov P, Petrov A, Keshri S, Laroze D, Thakur S, Brooks W, Cheng T, Javaid T, Wang L, Yuan L, Hu Z, Liang Z, Liu J, Wang X, Chen GM, Chen HS, Chen M, Chen Y, Hou Q, Hou X, Iemmi F, Jiang CH, Kapoor A, Liao H, Liu G, Liu Z-A, Song JNet al., 2026,

Measurement of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mi>B</mml:mi> </mml:math> meson production fraction ratios in proton-proton collisions at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:msqrt> <mml:mrow> <mml:mi>s</mml:mi> </mml:mrow> </mml:msqrt> <mml:mo>=</mml:mo> <mml:mn>13</mml:mn> <mml:mtext> </mml:mtext> <mml:mtext> </mml:mtext> <mml:mi>TeV</mml:mi> </mml:mrow> </mml:math> using open-charm and charmonium decays

, Physical Review D, Vol: 114, ISSN: 2470-0010

<jats:p> Production fraction ratios of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"> <a:msup> <a:mi>B</a:mi> <a:mo>+</a:mo> </a:msup> </a:math> , <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"> <c:msup> <c:mi>B</c:mi> <c:mn>0</c:mn> </c:msup> </c:math> , and <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"> <e:msubsup> <e:mi>B</e:mi> <e:mi>s</e:mi> <e:mn>0</e:mn> </e:msubsup> </e:math> mesons are measured in proton-proton collisions at <g:math xmlns:g="http://www.w3.org/1998/Math/MathML" display="inline"> <g:mrow> <g:msqrt> <g:mrow> <g:mi>s</g:mi> </g:mrow> </g:msqrt> <g:mo>=</g:mo> <g:mn>13</g:mn> <g:mtext> </g:mtext> <g:mtext> </g:mtext> <g:mi>TeV</g:mi> </g:mrow> </g:math> using a special dataset recorded in 2018 with high-rate

Journal article

Hayrapetyan A, Makarenko V, Tumasyan A, Adam W, Andrejkovic JW, Benato L, Bergauer T, Dragicevic M, Giordano C, Hussain PS, Jeitler M, Krammer N, Li A, Liko D, Matthewman M, Mikulec I, Schieck J, Schöfbeck R, Schwarz D, Shooshtari M, Sonawane M, Waltenberger W, Wulz CE, Janssen T, Kwon H, Ocampo Henao D, Van Laer T, Van Mechelen P, Bierkens J, Breugelmans N, DHondt J, Dansana S, De Moor A, Delcourt M, Heyen F, Hong Y, Kashko P, Lowette S, Makarenko I, Müller D, Song J, Tavernier S, Tytgat M, Van Onsem GP, Van Putte S, Vannerom D, Bilin B, Clerbaux B, Das AK, De Bruyn I, De Lentdecker G, Evard H, Favart L, Gianneios P, Khalilzadeh A, Khan FA, Malara A, Shahzad MA, Sharma A, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, Zhang F, De Coen M, Dobur D, Gokbulut G, Knolle J, Marckx D, Skovpen K, Tomaru AM, Van Den Bossche N, van der Linden J, Vandenbroeck J, Wezenbeek L, Aarup Petersen H, Bein S, Benecke A, Bethani A, Bruno G, Cappati A, De Favereau De Jeneret J, Delaere C, Gameiro Casalinho F, Giammanco A, Guzel AO, Lemaitre V, Lidrych J, Malek P, Mastrapasqua P, Turkcapar S, Alves GA, Barroso Ferreira Filho M, Coelho E, Hensel C, Menezes De Oliveira T, Mora Herrera C, Rebello Teles P, Soeiro M, Tonelli Manganote EJet al., 2026,

Measurement of the jet mass in hadronic decays of boosted W bosons at 13 TeV and extraction of the W boson mass

, Journal of High Energy Physics, Vol: 2026

The jet mass of W bosons decaying to a quark-antiquark pair is measured in W+jets events from proton-proton collisions at a center-of-mass energy of 13 TeV. The data used were collected by the CMS experiment at the CERN LHC and correspond to an integrated luminosity of 138 fb−1. Hadronic decays of W bosons with high momenta produce strongly collimated decay products due to the large Lorentz boost, and are reconstructed as single large-radius jets. These jets have a characteristic substructure that is exploited to distinguish them from the large background of quark- and gluon-initiated jets. The jet mass is computed using the soft-drop algorithm, which suppresses soft wide-angle radiation that leads to a broadening of the jet mass distribution. For the first time, unfolded measurements are presented of the double-differential W+jets cross section as a function of the jet transverse momentum and soft-drop mass. From these distributions, the W boson mass is obtained, with a value of 80.83 ± 0.55 GeV in a scheme with mass-dependent width, achieving the smallest uncertainty available today from an all-jets final state at a hadron collider.

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Journal article

Abe K, Abe S, Asaoka Y, Harada M, Hayato Y, Hiraide K, Hosokawa K, Hung TH, Ieki K, Ikeda M, Kameda J, Kanemura Y, Kataoka Y, Miki S, Mine S, Miura M, Moriyama S, Nakahata M, Nakayama S, Noguchi Y, Pronost G, Sato K, Sekiya H, Shinoda R, Shiozawa M, Suzuki Y, Takeda A, Takemoto Y, Tanaka H, Yano T, Itow Y, Kajita T, Nishijima R, Okumura K, Tashiro T, Tomiya T, Wang X, Fernandez P, Labarga L, Samudio D, Zaldivar B, Yanagisawa C, Kearns E, Mirabito J, Wan L, Wester T, Pointon BW, Bian J, Cortez B, Griskevich NJ, Jiang Y, Smy MB, Sobel HW, Takhistov V, Yankelevich A, Hill J, Jang MC, Lee SH, Moon DH, Park RG, Yang BS, Bodur B, Scholberg K, Walter CW, Beauchêne A, Le Blévec E, Drapier O, Ershova A, Ferey M, Mueller TA, Santos AD, Paganini P, Quach C, Rogly R, Nakamura T, Jang JS, Litchfield RP, Machado LN, Soler FJP, Learned JG, Choi K, Cao S, Anthony LHV, Prouse NW, Scott M, Uchida Y, Berardi V, Calabria NF, Catanesi MG, Ospina N, Radicioni E, Langella A, De Rosa G, Collazuol G, Feltre M, Mattiazzi M, Ludovici L, Gonin M, Périssé L, Quilain Bet al., 2026,

Search for Diffuse Supernova Neutrino Background with 956.2 Days of Super-Kamiokande Gadolinium Dataset

, Astrophysical Journal, Vol: 1005, ISSN: 0004-637X

We report the search result for the Diffuse Supernova Neutrino Background (DSNB) in neutrino energies beyond 9.3 MeV in the gadolinium-loaded Super-Kamiokande (SK) detector with a 22,500 × 956.2 m3 day exposure. Starting in the summer of 2020, SK introduced 0.01% gadolinium (Gd) by mass into its ultrapure water to enhance the neutron capture signal, termed the SK-VI phase. This was followed by a 0.03% Gd-loading in 2022, a phase referred to as SK-VII. We then conducted a DSNB search using 552.2 days of SK-VI data and 404.0 days of SK-VII data through 2023 September. This analysis includes several new features, such as two new machine learning neutron detection algorithms with Gd, an improved atmospheric background-reduction technique, and two parallel statistical approaches. No significant excess over background predictions was found in a DSNB spectrum-independent analysis, and 90% confidence level (C.L.) upper limits on the astrophysical electron antineutrino flux were set. Additionally, a spectral fitting result exhibited a ∼1.2σ disagreement with a null DSNB hypothesis, comparable to a previous result from 5823 days of all SK pure-water phases.

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Journal article

Aad G, Aakvaag E, Abbott B, Abdelhameed S, Abeling K, Abicht NJ, Abidi SH, Aboelela M, Aboulhorma A, Abramowicz H, Abulaiti Y, Acharya BS, Ackermann A, Adam Bourdarios C, Adamczyk L, Addepalli SV, Addison MJ, Adelman J, Adiguzel A, Adye T, Affolder AA, Afik Y, Agaras MN, Aggarwal A, Agheorghiesei C, Ahmadov F, Ahuja S, Ai X, Aielli G, Aikot A, Ait Tamlihat M, Aitbenchikh B, Akbiyik M, Åkesson TPA, Akimov AV, Akiyama D, Akolkar NN, Aktas S, Alberghi GL, Albert J, Albicocco P, Albouy GL, Alderweireldt S, Alegria ZL, Aleksa M, Aleksandrov IN, Alexa C, Alexopoulos T, Alfonsi F, Algren M, Alhroob M, Ali B, Ali HMJ, Ali S, Alibocus SW, Aliev M, Alimonti G, Alkakhi W, Allaire C, Allbrooke BMM, Allen JS, Allen JF, Allport PP, Aloisio A, Alonso F, Alpigiani C, Alsolami ZMK, Alvarez Fernandez A, Alves Cardoso M, Alviggi MG, Aly M, Amaral Coutinho Y, Ambler A, Amelung C, Amerl M, Ames CG, Amidei D, Amini B, Amirie K, Amirkhanov A, Amor Dos Santos SP, Amos KR, Amperiadou D, An S, Ananiev V, Anastopoulos C, Andeen T, Anders JK, Anderson AC, Andreazza A, Angelidakis S, Angerami A, Anisenkov AV, Annovi A, Antel C, Antipov E, Antonelli M, Anulli F, Aoki M, Aoki Tet al., 2026,

Search for long-lived particles using displaced vertices of oppositely charged leptons in 140fb−1 of pp collisions at s=13 TeV with the ATLAS detector

, Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, Vol: 878, ISSN: 0370-2693

A search is presented for long-lived particles decaying into an oppositely charged lepton pair, μ+μ−, e+e−, or e ± μ ∓, that form a vertex within the inner tracking system of the ATLAS detector at the Large Hadron Collider, displaced from the primary proton–proton interaction region. The analysis uses the 140 fb−1 of Run-2 data collected at s=13 TeV by the ATLAS experiment in 2015–2018. The results of the analysis are interpreted in the context of three benchmark models covering masses from 0.1 to 2.2 TeV and a range of mean proper lifetimes times the speed of light from 1 to 10 000 mm. The first model is a generic Z ′ boson pair-produced by a new heavy scalar, with the Z ′ decaying into lepton pairs. The remaining two models are R -parity violating supersymmetric models in which the lightest neutralino χ˜<inf>1</inf>0 decays into ℓ+ℓ′−ν (ℓ,ℓ′=e, μ). The models differ by the mode of production of the χ˜<inf>1</inf>0, which can be produced via the decay of pairs of gluinos or of pairs of charginos and neutralinos (χ˜<inf>1</inf>±χ˜<inf>1</inf>0, χ˜<inf>1</inf>±χ˜<inf>2</inf>0, or χ˜<inf>2</inf>0χ˜<inf>1</inf>0). Although each benchmark sample includes pair-produced LLPs, only a single vertex is required to be reconstructed. No dilepton displaced v

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Journal article

Hayrapetyan A, Makarenko V, Tumasyan A, Adam W, Benato L, Bergauer T, Dragicevic M, Hussain PS, Jeitler M, Krammer N, Li A, Liko D, Matthewman M, Schieck J, Schöfbeck R, Shooshtari M, Sonawane M, Waltenberger W, Wulz CE, Janssen T, Kwon H, Ocampo Henao D, Van Laer T, Van Mechelen P, Bierkens J, Breugelmans N, DHondt J, Dansana S, De Moor A, Delcourt M, Heyen F, Hong Y, Kashko P, Lowette S, Makarenko I, Tavernier S, Tytgat M, Van Onsem GP, Van Putte S, Vannerom D, Bilin B, Clerbaux B, Das AK, De Bruyn I, De Lentdecker G, Evard H, Favart L, Gianneios P, Khalilzadeh A, Khan FA, Malara A, Shahzad MA, Sharma A, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, Zhang F, De Coen M, Dobur D, Giordano C, Gokbulut G, Kaspar K, Kavtaradze D, Marckx D, Skovpen K, Tomaru AM, Van Den Bossche N, van der Linden J, Vandenbroeck J, Aarup Petersen H, Bein S, Benecke A, Bethani A, Bruno G, Cappati A, De Favereau De Jeneret J, Delaere C, Gameiro Casalinho F, Giammanco A, Guzel AO, Lemaitre V, Lidrych J, Malek P, Turkcapar S, Alves GA, Barroso Ferreira Filho M, Coelho E, Hensel C, Matos Figueiredo D, Menezes De Oliveira T, Mora Herrera C, Rebello Teles P, Soeiro M, Tonelli Manganote EJ, Vilela Pereira A, Aldá Júnior WL, Brandao Malbouisson H, Carvalho W, Chinellato Jet al., 2026,

Measurement of the Υ(1S), Υ(2S), and Υ(3S) differential cross sections in pp collisions at s=13.6 TeV

, Journal of High Energy Physics, Vol: 2026

The production cross sections of the Υ(1S), Υ(2S), and Υ(3S) mesons are measured in proton-proton collisions at s=13.6 TeV, using a data sample collected in 2022 by the CMS experiment and corresponding to an integrated luminosity of 37.4 fb−1. The measurement is performed in the μ+μ− decay channels, differentially as a function of transverse momentum in the 20–200 GeV range, in the |y| < 0.6 and 0.6 < |y| < 1.2 rapidity intervals.

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