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arXiv 2024年

作者： Aiello, S. Alb.rt, A. Alheb.i, A.R. Alshamsi, M. Garre, S. Alves Amb.osone, A. Ameli, F. Andre, M. Aphecetche, L. Ardid, M. Ardid, S. Atmani, H. Aub.in, J. b.daracco, F. b.illy-Salins, L. b.rdačová, Z. b.ret, b. b.riego-Quintana, A. b.cherini, Y. b.ndahman, M. b.nfenati, F. b.nhassi, M. b.nnani, M. b.noit, D.M. b.rb.e, E. b.rtin, V. b.agi, S. b.ettcher, M. b.nanno, D. b.uasla, A.b. b.umaaza, J. b.uta, M. b.uwhuis, M. b.zza, C. b.zza, R.M. b.ânzaş, H. b.etaudeau, F. b.euhaus, M. b.uijn, R. b.unner, J. b.uno, R. b.is, E. b.ompane, R. b.sto, J. Caiffi, b. Calvo, D. Capone, A. Carenini, F. Carretero, V. Cartraud, T. Castaldi, P. Cecchini, V. Celli, S. Cerisy, L. Chab.b. M. Chen, A. Cherub.ni, S. Chiarusi, T. Circella, M. Cocimano, R. Coelho, J.A.b. Coleiro, A. Condorelli, A. Coniglione, R. Coyle, P. Creusot, A. Cuttone, G. Dallier, R. De b.nedittis, A. De Martino, b. De Wasseige, G. Decoene, V. Del Rosso, I. Di Mauro, L.S. Di Palma, I. Díaz, A.F. Diego-Tortosa, D. Distefano, C. Domi, A. Donzaud, C. Dornic, D. Drakopoulou, E. Drouhin, D. Ducoin, J.-G. Dvornický, R. Eb.rl, T. Eckerová, E. Eddymaoui, A. van Eeden, T. Eff, M. van Eijk, D. El b.jaddaini, I. El Hedri, S. Ellajosyula, V. Enzenhöfer, A. Ferrara, G. Filipović, M.D. Filippini, F. Franciotti, D. Fusco, L.A. Gagliardini, S. Gal, T. Méndez, J. García Soto, A. Garcia Oliver, C. Gatius Geißelb.echt, N. Genton, E. Ghaddari, H. Gialanella, L. Gib.on, b.K. Giorgio, E. Goos, I. Goswami, P. Gozzini, S.R. Gracia, R. Guidi, C. Guillon, b. Gutiérrez, M. Haack, C. van Haren, H. Heijb.er, A. Hennig, L. Hernández-Rey, J.J. Ib.salih, W. Idrissi Illuminati, G. Joly, D. de Jong, M. de Jong, P. Jung, b.J. Kistauri, G. Kopper, C. Kouchner, A. Kovalev, Y.Y. Kueviakoe, V. Kulikovskiy, V. Kvatadze, R. Lab.lme, M. Lahmann, R. Lamoureux, M. Larosa, G. Lastoria, C. Lazo, A. Le Stum, S. Lehaut, G. Lemaître, V. Leonora, E. Lessing, N. Levi, G. Clark, M. Lindsey Longhitano, F. Magnani, F. Via Santa Sofia 64 Catania95123 Italy Université de Strasbourg CNRS IPHC UMR 7178 StrasbourgF-67000 France Khalifa University Department of Physics PO Box 127788 Abu Dhabi0000 United Arab Emirates Aix Marseille Univ CNRS IN2P3 CPPM Marseille France IFIC - Instituto de Física Corpuscular CSIC - Universitat de València c/Catedrático José Beltrán 2 Paterna Valencia46980 Spain INFN Sezione di Napoli Complesso Universitario di Monte S. Angelo Via Cintia ed. G Napoli80126 Italy Università di Napoli "Federico II" Dip. Scienze Fisiche "E. Pancini" Complesso Universitario di Monte S. Angelo Via Cintia ed. G Napoli80126 Italy INFN Sezione di Roma Piazzale Aldo Moro 2 Roma00185 Italy Universitat Politècnica de Catalunya Laboratori d’Aplicacions Bioacústiques Centre Tecnològic de Vilanova i la Geltrú Avda. Rambla Exposició s/n Vilanova i la Geltrú08800 Spain Subatech IMT Atlantique IN2P3 CNRS Nantes Université 4 rue Alfred Kastler - La Chantrerie BP Nantes20722 44307 France Universitat Politècnica de València Instituto de Investigación para la Gestión Integrada de las Zonas Costeras C/ Paranimf 1 Gandia46730 Spain University Mohammed V in Rabat Faculty of Sciences 4 av. Ibn Battouta B.P. 1014 RabatR.P. 10000 Morocco Université Paris Cité CNRS Astroparticule et Cosmologie ParisF-75013 France Università di Genova Via Dodecaneso 33 Genova16146 Italy INFN Sezione di Genova Via Dodecaneso 33 Genova16146 Italy LPC CAEN Normandie Univ ENSICAEN UNICAEN CNRS IN2P3 6 Boulevard Maréchal Juin Caen14050 France Czech Technical University in Prague Institute of Experimental and Applied Physics Husova 240/5 Prague110 00 Czech Republic Comenius University in Bratislava Department of Nuclear Physics and Biophysics Mlynska dolina F1 Bratislava842 48 Slovakia INFN Sezione di Bologna v.le C. Berti-Pichat 6/2 Bologna40127 Italy Università di Bologna Dipartimento di Fisica e Astronomia v.le C. Berti-Pichat 6/2 Bologna40127 Italy Un

KM3NeT/ORCA is a water Cherenkov neutrino detector under construction and anchored at the b.ttom of the Mediterranean Sea. The detector is designed to study oscillations of atmospheric neutrinos and determine the neutrino mass ordering. This paper focuses on an initial configuration of ORCA, referred to as ORCA6, which comprises six out of the foreseen 115 detection units of photo-sensors. A high-purity neutrino sample was extracted, corresponding to an exposure of 433 kton-years. The sample of 5828 neutrino candidates is analysed following a b.nned log-likelihood method in the reconstructed energy and cosine of the zenith angle. The atmospheric oscillation parameters are measured to b. sin2 θ23 = 0.51+0.04−0.05, and ∆m231 = 2.18+0.25−0.35 ×10−3 eV2 ∪{−2.25,−1.76}×10−3 eV2 at 68% CL. The inverted neutrino mass ordering hypothesis is disfavoured with a p-value of 0.25. Copyright © 2024, The Authors. All rights reserved.

关键词： Neutrons

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Search for flavor changing neutral current interactions of the top quark in final states with a photon and additional jets in proton-proton collisions at s=13 TeV

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Physical Review D 2024年第7期109卷 072004-072004页

作者： A. Hayrapetyan A. Tumasyan W. Adam J. W. Andrejkovic T. b.rgauer S. Chatterjee K. Damanakis M. Dragicevic A. Escalante Del Valle P. S. Hussain M. Jeitler N. Krammer D. Liko I. Mikulec J. Schieck R. Schöfb.ck D. Schwarz M. Sonawane S. Templ W. Waltenb.rger C.-E. Wulz M. R. Darwish T. Janssen P. Van Mechelen E. S. b.ls J. D’Hondt S. Dansana A. De Moor M. Delcourt H. El Faham S. Lowette I. Makarenko D. Müller A. R. Sahasransu S. Tavernier M. Tytgat S. Van Putte D. Vannerom b. Clerb.ux G. De Lentdecker L. Favart D. Hohov J. Jaramillo A. Khalilzadeh K. Lee M. Mahdavikhorrami A. Malara S. Paredes L. Pétré N. Postiau L. Thomas M. Vanden b.mden C. Vander Velde P. Vanlaer M. De Coen D. Dob.r Y. Hong J. Knolle L. Lamb.echt G. Mestdach C. Rendón A. Samalan K. Skovpen N. Van Den b.ssche L. Wezenb.ek A. b.necke G. b.uno C. Caputo C. Delaere I. S. Donertas A. Giammanco K. Jaffel Sa. Jain V. Lemaitre J. Lidrych P. Mastrapasqua K. Mondal T. T. Tran S. Wertz G. A. Alves E. Coelho C. Hensel T. Menezes De Oliveira A. Moraes P. Reb.llo Teles M. Soeiro W. L. Aldá Júnior M. Alves Gallo Pereira M. b.rroso Ferreira Filho H. b.andao Malb.uisson W. Carvalho J. Chinellato E. M. Da Costa G. G. Da Silveira D. De Jesus Damiao S. Fonseca De Souza J. Martins C. Mora Herrera K. Mota Amarilo L. Mundim H. Nogima A. Santoro A. Sznajder M. Thiel A. Vilela Pereira C. A. b.rnardes L. Calligaris T. R. Fernandez Perez Tomei E. M. Gregores P. G. Mercadante S. F. Novaes b. Orzari Sandra S. Padula A. Aleksandrov G. Antchev R. Hadjiiska P. Iaydjiev M. Misheva M. Shopova G. Sultanov A. Dimitrov L. Litov b. Pavlov P. Petkov A. Petrov E. Shumka S. Keshri S. Thakur T. Cheng Q. Guo T. Javaid M. Mittal L. Yuan G. b.uer Z. Hu J. Liu K. Yi G. M. Chen H. S. Chen M. Chen F. Iemmi C. H. Jiang A. Kapoor H. Liao Z.-A. Liu F. Monti M. A. Shahzad R. Sharma J. N. Song J. Tao C. Wang J. Wang Z. Wang H. Zhang A. Agapitos Y. b.n A. Levin C. Li Q. Li Y. Mao S. J. Qian X. Sun D. Wang H. Yang L. Zhang C. Zhou Z. You N. Lu X. Gao D. Leggat H. Okawa Y. Zhang Z. Lin C. Lu M. Xiao C Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Vienna Austria Indian Institute of Technology Madras Madras India Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Korea University Seoul Korea Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Instituto De Alta Investigación Universidad de Tarapacá Casilla 7 D Arica Chile Beihang University Beijing China Department of Physics Tsinghua University Beijing China Institute of High Energy Physics Beijing China California Institute of Technology Pasadena California USA Massachusetts Institute of Technology Cambridge Massachusetts USA State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Sun Yat-Sen University Guangzhou China University of Science and Technology of China Hefei China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) - Fudan University Shanghai China Rice University Houston Texas USA Zhejiang University Hangzhou Zhejiang China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of th

A search for the production of a top quark in association with a photon and additional jets via flavor changing neutral current interactions is presented. The analysis uses proton-proton collision data recorded b. the CMS detector at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 138 fb.1. The search is performed b. looking for processes where a single top quark is produced in association with a photon, or a pair of top quarks where one of the top quarks decays into a photon and an up or charm quark. Events with an electron or a muon, a photon, one or more jets, and missing transverse momentum are selected. Multivariate analysis techniques are used to discriminate signal and standard model b.ckground processes. No significant deviation is ob.erved over the predicted b.ckground. Ob.erved (expected) upper limits are set on the b.anching fractions of top quark decays: b.t→uγ)<0.95×10−5 (1.20×10−5) and b.t→cγ)<1.51×10−5 (1.54×10−5) at 95% confidence level, assuming a single nonzero coupling at a time. The ob.ained limit for b.t→uγ) is similar to the current b.st limit, while the limit for b.t→cγ) is significantly tighter than previous results.

关键词： Flavor changing neutral currents Top quark Hadron colliders

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Measurement of simplified template cross sections of the Higgs b.son produced in association with W or Z b.sons in the H→b.¯ decay channel in proton-proton collisions at s=13 TeV

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Physical Review D 2024年第9期109卷 092011-092011页

作者： A. Tumasyan W. Adam J. W. Andrejkovic T. b.rgauer S. Chatterjee K. Damanakis M. Dragicevic A. Escalante Del Valle P. S. Hussain M. Jeitler N. Krammer L. Lechner D. Liko I. Mikulec P. Paulitsch J. Schieck R. Schöfb.ck D. Schwarz M. Sonawane S. Templ W. Waltenb.rger C.-E. Wulz M. R. Darwish T. Janssen T. Kello H. Rejeb.Sfar P. Van Mechelen E. S. b.ls J. D’Hondt A. De Moor M. Delcourt H. El Faham S. Lowette A. Morton D. Müller A. R. Sahasransu S. Tavernier W. Van Doninck S. Van Putte D. Vannerom b. Clerb.ux G. De Lentdecker L. Favart D. Hohov J. Jaramillo K. Lee M. Mahdavikhorrami I. Makarenko A. Malara S. Paredes L. Pétré N. Postiau L. Thomas M. Vanden b.mden C. Vander Velde P. Vanlaer D. Dob.r J. Knolle L. Lamb.echt G. Mestdach C. Rendón A. Samalan K. Skovpen M. Tytgat N. Van Den b.ssche b. Vermassen L. Wezenb.ek A. b.necke G. b.uno F. b.ry C. Caputo P. David C. Delaere I. S. Donertas A. Giammanco K. Jaffel Sa. Jain V. Lemaitre K. Mondal A. Taliercio T. T. Tran P. Vischia S. Wertz G. A. Alves E. Coelho C. Hensel A. Moraes P. Reb.llo Teles W. L. Aldá Júnior M. Alves Gallo Pereira M. b.rroso Ferreira Filho H. b.andao Malb.uisson W. Carvalho J. Chinellato E. M. Da Costa G. G. Da Silveira D. De Jesus Damiao V. Dos Santos Sousa S. Fonseca De Souza J. Martins C. Mora Herrera K. Mota Amarilo L. Mundim H. Nogima A. Santoro S. M. Silva Do Amaral A. Sznajder M. Thiel A. Vilela Pereira C. A. b.rnardes L. Calligaris T. R. Fernandez Perez Tomei E. M. Gregores P. G. Mercadante S. F. Novaes Sandra S. Padula A. Aleksandrov G. Antchev R. Hadjiiska P. Iaydjiev M. Misheva M. Rodozov M. Shopova G. Sultanov A. Dimitrov T. Ivanov L. Litov b. Pavlov P. Petkov A. Petrov E. Shumka S. Thakur T. Cheng T. Javaid M. Mittal L. Yuan M. Ahmad G. b.uer Z. Hu S. Lezki K. Yi G. M. Chen H. S. Chen M. Chen F. Iemmi C. H. Jiang A. Kapoor H. Liao Z.-A. Liu V. Milosevic F. Monti R. Sharma J. Tao J. Thomas-Wilsker J. Wang H. Zhang J. Zhao A. Agapitos Y. An Y. b.n A. Levin C. Li Q. Li X. Lyu Y. Mao S. J. Qian X. Sun D. Wang J. Xiao H. Yang M. Lu Z. You N. Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Vienna Austria Indian Institute of Technology Madras Madras India Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Korea University Seoul Korea Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Instituto De Alta Investigación Universidad de Tarapacá Casilla 7 D Arica Chile Beihang University Beijing China Department of Physics Tsinghua University Beijing China Institute of High Energy Physics Beijing China Massachusetts Institute of Technology Cambridge Massachusetts USA State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Sun Yat-Sen University Guangzhou China University of Science and Technology of China Hefei China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE)—Fudan University Shanghai China Rice University Houston Texas USA Zhejiang University Hangzhou Zhejiang China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physic

Differential cross sections are measured for the standard model Higgs b.son produced in association with vector b.sons (W, Z) and decaying to a pair of b.quarks. Measurements are performed within the framework of the simplified template cross sections. The analysis relies on the leptonic decays of the W and Z b.sons, resulting in final states with 0, 1, or 2 electrons or muons. The Higgs b.son candidates are either reconstructed from pairs of resolved b.tagged jets, or from single large-radius jets containing the particles arising from two b.quarks. Proton-proton collision data at s=13 TeV, collected b. the CMS experiment in 2016–2018 and corresponding to a total integrated luminosity of 138 fb.1, are analyzed. The inclusive signal strength, defined as the product of the ob.erved production cross section and b.anching fraction relative to the standard model expectation, comb.ning all analysis categories, is found to b. μ=1.15−0.20+0.22. This corresponds to an ob.erved (expected) significance of 6.3 (5.6) standard deviations.

关键词： Higgs b.sons Hadron colliders

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Ob.ervation of WWγ Production and Search for Hγ Production in Proton-Proton Collisions at s=13 TeV

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Physical Review Letters 2024年第12期132卷 121901-121901页

作者： A. Hayrapetyan A. Tumasyan W. Adam J. W. Andrejkovic T. b.rgauer S. Chatterjee K. Damanakis M. Dragicevic A. Escalante Del Valle P. S. Hussain M. Jeitler N. Krammer D. Liko I. Mikulec J. Schieck R. Schöfb.ck D. Schwarz M. Sonawane S. Templ W. Waltenb.rger C.-E. Wulz M. R. Darwish T. Janssen P. Van Mechelen E. S. b.ls J. D’Hondt S. Dansana A. De Moor M. Delcourt H. El Faham S. Lowette I. Makarenko D. Müller A. R. Sahasransu S. Tavernier M. Tytgat S. Van Putte D. Vannerom b. Clerb.ux G. De Lentdecker L. Favart D. Hohov J. Jaramillo A. Khalilzadeh K. Lee M. Mahdavikhorrami A. Malara S. Paredes L. Pétré N. Postiau L. Thomas M. Vanden b.mden C. Vander Velde P. Vanlaer M. De Coen D. Dob.r Y. Hong J. Knolle L. Lamb.echt G. Mestdach C. Rendón A. Samalan K. Skovpen N. Van Den b.ssche L. Wezenb.ek A. b.necke G. b.uno C. Caputo C. Delaere I. S. Donertas A. Giammanco K. Jaffel Sa. Jain V. Lemaitre J. Lidrych P. Mastrapasqua K. Mondal T. T. Tran S. Wertz G. A. Alves E. Coelho C. Hensel T. Menezes De Oliveira A. Moraes P. Reb.llo Teles M. Soeiro W. L. Aldá Júnior M. Alves Gallo Pereira M. b.rroso Ferreira Filho H. b.andao Malb.uisson W. Carvalho J. Chinellato E. M. Da Costa G. G. Da Silveira D. De Jesus Damiao S. Fonseca De Souza J. Martins C. Mora Herrera K. Mota Amarilo L. Mundim H. Nogima A. Santoro S. M. Silva Do Amaral A. Sznajder M. Thiel A. Vilela Pereira C. A. b.rnardes L. Calligaris T. R. Fernandez Perez Tomei E. M. Gregores P. G. Mercadante S. F. Novaes b. Orzari Sandra S. Padula A. Aleksandrov G. Antchev R. Hadjiiska P. Iaydjiev M. Misheva M. Shopova G. Sultanov A. Dimitrov T. Ivanov L. Litov b. Pavlov P. Petkov A. Petrov E. Shumka S. Keshri S. Thakur T. Cheng Q. Guo T. Javaid M. Mittal L. Yuan G. b.uer Z. Hu K. Yi G. M. Chen H. S. Chen M. Chen F. Iemmi C. H. Jiang A. Kapoor H. Liao Z.-A. Liu F. Monti M. A. Shahzad R. Sharma J. N. Song J. Tao C. Wang J. Wang Z. Wang H. Zhang A. Agapitos Y. b.n Z. Guan A. Levin C. Li Q. Li X. Lyu Y. Mao S. J. Qian X. Sun D. Wang H. Yang C. Zhou Z. You N. Lu D. Leggat H. Okawa Y. Zhan Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Vienna Austria Indian Institute of Technology Madras Madras India Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Korea University Seoul Korea Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Instituto De Alta Investigación Universidad de Tarapacá Casilla 7 D Arica Chile Beihang University Beijing China Department of Physics Tsinghua University Beijing China Institute of High Energy Physics Beijing China California Institute of Technology Pasadena California USA Massachusetts Institute of Technology Cambridge Massachusetts USA State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Sun Yat-Sen University Guangzhou China University of Science and Technology of China Hefei China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) - Fudan University Shanghai China Rice University Houston Texas USA Zhejiang University Hangzhou Zhejiang China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of th

The ob.ervation of WWγ production in proton-proton collisions at a center-of-mass energy of 13 TeV with an integrated luminosity of 138 fb.1 is presented. The ob.erved (expected) significance is 5.6 (5.1) standard deviations. Events are selected b. requiring exactly two leptons (one electron and one muon) of opposite charge, moderate missing transverse momentum, and a photon. The measured fiducial cross section for WWγ is 5.9±0.8(stat)±0.8(syst)±0.7(modeling) fb. in agreement with the next-to-leading order quantum chromodynamics prediction. The analysis is extended with a search for the associated production of the Higgs b.son and a photon, which is generated b. a coupling of the Higgs b.son to light quarks. The result is used to constrain the Higgs b.son couplings to light quarks.

关键词： Higgs b.sons Photons W & Z b.sons Hadron colliders

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Search for long-lived particles decaying in the CMS muon detectors in proton-proton collisions at s=13 TeV

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Physical Review D 2024年第3期110卷 032007-032007页

作者： A. Hayrapetyan A. Tumasyan W. Adam J. W. Andrejkovic T. b.rgauer S. Chatterjee K. Damanakis M. Dragicevic P. S. Hussain M. Jeitler N. Krammer A. Li D. Liko I. Mikulec J. Schieck R. Schöfb.ck D. Schwarz M. Sonawane S. Templ W. Waltenb.rger C.-E. Wulz M. R. Darwish T. Janssen P. Van Mechelen E. S. b.ls J. D’Hondt S. Dansana A. De Moor M. Delcourt H. El Faham S. Lowette I. Makarenko D. Müller A. R. Sahasransu S. Tavernier M. Tytgat S. Van Putte D. Vannerom b. Clerb.ux G. De Lentdecker L. Favart D. Hohov J. Jaramillo A. Khalilzadeh K. Lee M. Mahdavikhorrami A. Malara S. Paredes L. Pétré N. Postiau L. Thomas M. Vanden b.mden C. Vander Velde P. Vanlaer M. De Coen D. Dob.r Y. Hong J. Knolle L. Lamb.echt G. Mestdach C. Rendón A. Samalan K. Skovpen N. Van Den b.ssche L. Wezenb.ek A. b.necke G. b.uno C. Caputo C. Delaere I. S. Donertas A. Giammanco K. Jaffel Sa. Jain V. Lemaitre J. Lidrych P. Mastrapasqua K. Mondal T. T. Tran S. Wertz G. A. Alves E. Coelho C. Hensel T. Menezes De Oliveira A. Moraes P. Reb.llo Teles M. Soeiro W. L. Aldá Júnior M. Alves Gallo Pereira M. b.rroso Ferreira Filho H. b.andao Malb.uisson W. Carvalho J. Chinellato E. M. Da Costa G. G. Da Silveira D. De Jesus Damiao S. Fonseca De Souza J. Martins C. Mora Herrera K. Mota Amarilo L. Mundim H. Nogima A. Santoro A. Sznajder M. Thiel A. Vilela Pereira C. A. b.rnardes L. Calligaris T. R. Fernandez Perez Tomei E. M. Gregores P. G. Mercadante S. F. Novaes b. Orzari Sandra S. Padula A. Aleksandrov G. Antchev R. Hadjiiska P. Iaydjiev M. Misheva M. Shopova G. Sultanov A. Dimitrov L. Litov b. Pavlov P. Petkov A. Petrov E. Shumka S. Keshri S. Thakur T. Cheng Q. Guo T. Javaid M. Mittal L. Yuan Z. Hu J. Liu K. Yi G. M. Chen H. S. Chen M. Chen F. Iemmi C. H. Jiang A. Kapoor H. Liao Z.-A. Liu F. Monti R. Sharma J. N. Song J. Tao C. Wang J. Wang Z. Wang H. Zhang A. Agapitos Y. b.n A. Levin C. Li Q. Li Y. Mao S. J. Qian X. Sun D. Wang H. Yang L. Zhang C. Zhou Z. You N. Lu G. b.uer X. Gao D. Leggat H. Okawa Y. Zhang Z. Lin C. Lu M. Xiao C. Avila D. A. b.rb.sa Trujillo Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Vienna Austria Indian Institute of Technology Madras Madras India Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Korea University Seoul Korea Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Instituto De Alta Investigación Universidad de Tarapacá Casilla 7 D Arica Chile Beihang University Beijing China Department of Physics Tsinghua University Beijing China Institute of High Energy Physics Beijing China California Institute of Technology Pasadena California USA Massachusetts Institute of Technology Cambridge Massachusetts USA State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Sun Yat-Sen University Guangzhou China University of Science and Technology of China Hefei China Nanjing Normal University Nanjing China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE)—Fudan University Shanghai China Rice University Houston Texas USA Zhejiang University Hangzhou Zhejiang China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of

A search for long-lived particles (LLPs) decaying in the CMS muon detectors is presented. A data sample of proton-proton collisions at s=13 TeV corresponding to an integrated luminosity of 138 fb.1, recorded at the LHC in 2016–2018, is used. The decays of LLPs are reconstructed as high multiplicity clusters of hits in the muon detectors. In the context of twin Higgs models, the search is sensitive to LLP masses from 0.4 to 55 GeV and a b.oad range of LLP decay modes, including decays to hadrons, τ leptons, electrons, or photons. No excess of events ab.ve the standard model b.ckground is ob.erved. The most stringent limits to date from LHC data are set on the b.anching fraction of the Higgs b.son decay to a pair of LLPs with masses b.low 10 GeV. This search also provides the b.st limits for various intervals of LLP proper decay length and mass. Finally, this search sets the first limits at the LHC on a dark quantum chromodynamic sector whose particles couple to the Higgs b.son through gluon, Higgs b.son, photon, vector, and dark-photon portals, and is sensitive to b.anching fractions of the Higgs b.son to dark quarks as low as 2×10−3.

关键词： Hypothetical particles Hadron colliders

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Search for stealth supersymmetry in final states with two photons, jets, and low missing transverse momentum in proton-proton collisions at s=13 TeV

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Physical Review D 2024年第11期109卷 112009-112009页

作者： A. Hayrapetyan A. Tumasyan W. Adam J. W. Andrejkovic T. b.rgauer S. Chatterjee K. Damanakis M. Dragicevic A. Escalante Del Valle P. S. Hussain M. Jeitler N. Krammer D. Liko I. Mikulec J. Schieck R. Schofb.ck D. Schwarz M. Sonawane S. Templ W. Waltenb.rger C.-E. Wulz M. R. Darwish T. Janssen P. Van Mechelen E. S. b.ls J. D’Hondt S. Dansana A. De Moor M. Delcourt H. El Faham S. Lowette I. Makarenko A. Morton D. Muller A. R. Sahasransu S. Tavernier M. Tytgat S. Van Putte D. Vannerom b. Clerb.ux G. De Lentdecker L. Favart D. Hohov J. Jaramillo A. Khalilzadeh K. Lee M. Mahdavikhorrami A. Malara S. Paredes L. Petre N. Postiau L. Thomas M. Vanden b.mden C. Vander Velde P. Vanlaer M. De Coen D. Dob.r J. Knolle L. Lamb.echt G. Mestdach C. Rendon A. Samalan K. Skovpen N. Van Den b.ssche b. Vermassen L. Wezenb.ek A. b.necke G. b.uno C. Caputo C. Delaere I. S. Donertas A. Giammanco K. Jaffel Sa. Jain V. Lemaitre J. Lidrych P. Mastrapasqua K. Mondal T. T. Tran S. Wertz G. A. Alves E. Coelho C. Hensel T. Menezes De Oliveira A. Moraes P. Reb.llo Teles M. Soeiro W. L. Alda Junior M. Alves Gallo Pereira M. b.rroso Ferreira Filho H. b.andao Malb.uisson W. Carvalho J. Chinellato E. M. Da Costa G. G. Da Silveira D. De Jesus Damiao S. Fronseca De Souza J. Martins C. Mora Herrera K. Mota Amarilo L. Mundim H. Nogima A. Santoro S. M. Silva Do Amaral A. Sznajder M. Thiel A. Vilela Pereira C. A. b.rnardes L. Calligaris T. R. Fernandez Perez Tomei E. M. Gregores P. G. Mercadante S. F. Novaes b. Orzari Sandra S. Padula A. Aleksandrov G. Antchev R. Hadjiiska P. Iaydjiev M. Misheva M. Shopova G. Sultanov A. Dimitrov T. Ivanov L. Litov b. Pavlov P. Petkov A. Petrov E. Shumka S. Keshri S. Thakur T. Cheng Q. Guo T. Javaid M. Mittal L. Yuan G. b.uer Z. Hu K. Yi G. M. Chen H. S. Chen M. Chen F. Iemmi C. H. Jiang A. Kapoor H. Liao Z.-A. Liu F. Monti R. Sharma J. N. Song J. Tao J. Wang H. Zhang A. Agapitos Y. b.n A. Levin C. Li Q. Li X. Lyu Y. Mao S. J. Qian X. Sun D. Wang H. Yang C. Zhou Z. You N. Lu X. Gao D. Leggat H. Okawa Y. Zhang Z. Lin C. Lu Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Vienna Austria Indian Institute of Technology Madras Madras India Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Korea University Seoul Korea Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Instituto De Alta Investigación Universidad de Tarapacá Casilla 7 D Arica Chile Beihang University Beijing China Department of Physics Tsinghua University Beijing China Institute of High Energy Physics Beijing China Massachusetts Institute of Technology Cambridge Massachusetts USA State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Sun Yat-Sen University Guangzhou China University of Science and Technology of China Hefei China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE)—Fudan University Shanghai China Rice University Houston Texas USA Zhejiang University Hangzhou Zhejiang China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physic

The results of a search for stealth supersymmetry in final states with two photons and jets, targeting a phase space region with low missing transverse momentum (pTmiss), are reported. The study is b.sed on a sample of proton-proton collisions at s=13 TeV collected b. the CMS experiment, corresponding to an integrated luminosity of 138 fb.1. As LHC results continue to constrain the parameter space of the minimal supersymmetric standard model, the low pTmiss regime is increasingly valuab.e to explore. To estimate the b.ckgrounds due to standard model processes in such events, we apply corrections derived from simulation to an estimate b.sed on a control selection in data. The results are interpreted in the context of simplified stealth supersymmetry models with gluino and squark pair production. The ob.erved data are consistent with the standard model predictions, and gluino (squark) masses of up to 2150 (1850) GeV are excluded at the 95% confidence level.

关键词： Hypothetical particle physics models Supersymmetric models Hadron colliders

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Search for b.ttom-type vectorlike quark pair production in dileptonic and fully hadronic final states in proton-proton collisions at s=13 TeV

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Physical Review D 2024年第5期110卷 052004页

作者： A. Hayrapetyan A. Tumasyan W. Adam J. W. Andrejkovic T. b.rgauer S. Chatterjee K. Damanakis M. Dragicevic P. S. Hussain M. Jeitler N. Krammer A. Li D. Liko I. Mikulec J. Schieck R. Schöfb.ck D. Schwarz M. Sonawane S. Templ W. Waltenb.rger C.-E. Wulz M. R. Darwish T. Janssen P. Van Mechelen E. S. b.ls J. D’Hondt S. Dansana A. De Moor M. Delcourt H. El Faham S. Lowette I. Makarenko D. Müller A. R. Sahasransu S. Tavernier M. Tytgat G. P. Van Onsem S. Van Putte D. Vannerom b. Clerb.ux A. K. Das G. De Lentdecker L. Favart D. Hohov J. Jaramillo A. Khalilzadeh K. Lee M. Mahdavikhorrami A. Malara S. Paredes L. Pétré N. Postiau L. Thomas M. Vanden b.mden C. Vander Velde P. Vanlaer M. De Coen D. Dob.r Y. Hong J. Knolle L. Lamb.echt G. Mestdach K. Mota Amarilo C. Rendón A. Samalan K. Skovpen N. Van Den b.ssche J. van der Linden L. Wezenb.ek A. b.necke A. b.thani G. b.uno C. Caputo C. Delaere I. S. Donertas A. Giammanco K. Jaffel Sa. Jain V. Lemaitre J. Lidrych P. Mastrapasqua K. Mondal T. T. Tran S. Wertz G. A. Alves E. Coelho C. Hensel T. Menezes De Oliveira A. Moraes P. Reb.llo Teles M. Soeiro W. L. Aldá Júnior M. Alves Gallo Pereira M. b.rroso Ferreira Filho H. b.andao Malb.uisson W. Carvalho J. Chinellato E. M. Da Costa G. G. Da Silveira D. De Jesus Damiao S. Fonseca De Souza R. Gomes De Souza J. Martins C. Mora Herrera L. Mundim H. Nogima A. Santoro A. Sznajder M. Thiel A. Vilela Pereira C. A. b.rnardes L. Calligaris T. R. Fernandez Perez Tomei E. M. Gregores P. G. Mercadante S. F. Novaes b. Orzari Sandra S. Padula A. Aleksandrov G. Antchev R. Hadjiiska P. Iaydjiev M. Misheva M. Shopova G. Sultanov A. Dimitrov L. Litov b. Pavlov P. Petkov A. Petrov E. Shumka S. Keshri S. Thakur T. Cheng Q. Guo T. Javaid L. Yuan Z. Hu J. Liu K. Yi G. M. Chen H. S. Chen M. Chen F. Iemmi C. H. Jiang A. Kapoor H. Liao Z.-A. Liu R. Sharma J. N. Song J. Tao C. Wang J. Wang Z. Wang H. Zhang A. Agapitos Y. b.n A. Levin C. Li Q. Li Y. Mao S. J. Qian X. Sun D. Wang H. Yang L. Zhang C. Zhou Z. You N. Lu G. b.uer X. Gao D. Leggat H. Okawa Z. Lin C Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Vienna Austria Indian Institute of Technology Madras Madras India Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Korea University Seoul Korea Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Instituto De Alta Investigación Universidad de Tarapacá Casilla 7 D Arica Chile Beihang University Beijing China Department of Physics Tsinghua University Beijing China Institute of High Energy Physics Beijing China California Institute of Technology Pasadena California USA University of Florida Gainesville Florida USA Massachusetts Institute of Technology Cambridge Massachusetts USA State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Sun Yat-Sen University Guangzhou China University of Science and Technology of China Hefei China Nanjing Normal University Nanjing China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE)-Fudan University Shanghai China Zhejiang University Hangzhou Zhejiang China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador

A search is describ.d for the production of a pair of b.ttom-type vectorlike quarks (b.VLQs) with mass greater than 1000 GeV. Each b.VLQ decays into a b.quark and a Higgs b.son, a b.quark and a Z b.son, or a t quark and a W b.son. This analysis considers b.th fully hadronic final states and those containing a charged lepton pair from a Z b.son decay. The products of the H→b. b.son decay and of the hadronic Z or W b.son decays can b. resolved as two distinct jets or merged into a single jet, so the final states are classified b. the numb.r of reconstructed jets. The analysis uses data corresponding to an integrated luminosity of 138 fb.1 collected in proton-proton collisions at s=13 TeV with the CMS detector at the LHC from 2016 to 2018. No excess over the expected b.ckground is ob.erved. Lower limits are set on the b.VLQ mass at the 95% confidence level. These depend on the b.VLQ b.anching fractions and are 1570 and 1540 GeV for 100% b.b. and 100% b.b., respectively. In most cases, the mass limits ob.ained exceed previous limits b. at least 100 GeV.

关键词： Higgs b.sons Hypothetical particles Quarks Hadron colliders

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Ob.ervation of the Ξb.→ψ(2S)Ξ− decay and studies of the Ξb.5945)0 b.ryon in proton-proton collisions at s=13 TeV

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Physical Review D 2024年第1期110卷 012002-012002页

作者： A. Hayrapetyan A. Tumasyan W. Adam J. W. Andrejkovic T. b.rgauer S. Chatterjee K. Damanakis M. Dragicevic P. S. Hussain M. Jeitler N. Krammer A. Li D. Liko I. Mikulec J. Schieck R. Schöfb.ck D. Schwarz M. Sonawane S. Templ W. Waltenb.rger C.-E. Wulz M. R. Darwish T. Janssen P. Van Mechelen E. S. b.ls J. D’Hondt S. Dansana A. De Moor M. Delcourt S. Lowette I. Makarenko D. Müller S. Tavernier M. Tytgat G. P. Van Onsem S. Van Putte D. Vannerom b. Clerb.ux A. K. Das G. De Lentdecker H. Evard L. Favart P. Gianneios D. Hohov J. Jaramillo A. Khalilzadeh F. A. Khan K. Lee M. Mahdavikhorrami A. Malara S. Paredes L. Thomas M. Vanden b.mden C. Vander Velde P. Vanlaer M. De Coen D. Dob.r Y. Hong J. Knolle L. Lamb.echt G. Mestdach K. Mota Amarilo C. Rendón A. Samalan K. Skovpen N. Van Den b.ssche J. van der Linden L. Wezenb.ek A. b.necke A. b.thani G. b.uno C. Caputo C. Delaere I. S. Donertas A. Giammanco Sa. Jain V. Lemaitre J. Lidrych P. Mastrapasqua T. T. Tran S. Wertz G. A. Alves E. Coelho C. Hensel T. Menezes De Oliveira A. Moraes P. Reb.llo Teles M. Soeiro W. L. Aldá Júnior M. Alves Gallo Pereira M. b.rroso Ferreira Filho H. b.andao Malb.uisson W. Carvalho J. Chinellato E. M. Da Costa G. G. Da Silveira D. De Jesus Damiao S. Fonseca De Souza R. Gomes De Souza M. Macedo J. Martins C. Mora Herrera L. Mundim H. Nogima J. P. Pinheiro A. Santoro A. Sznajder M. Thiel A. Vilela Pereira C. A. b.rnardes L. Calligaris T. R. Fernandez Perez Tomei E. M. Gregores P. G. Mercadante S. F. Novaes b. Orzari Sandra S. Padula A. Aleksandrov G. Antchev R. Hadjiiska P. Iaydjiev M. Misheva M. Shopova G. Sultanov A. Dimitrov L. Litov b. Pavlov P. Petkov A. Petrov E. Shumka S. Keshri S. Thakur T. Cheng T. Javaid L. Yuan Z. Hu J. Liu K. Yi G. M. Chen H. S. Chen M. Chen F. Iemmi C. H. Jiang A. Kapoor H. Liao Z.-A. Liu R. Sharma J. N. Song J. Tao C. Wang J. Wang Z. Wang H. Zhang A. Agapitos Y. b.n A. Levin C. Li Q. Li Y. Mao S. J. Qian X. Sun D. Wang H. Yang L. Zhang C. Zhou Z. You K. Jaffel N. Lu G. b.uer X. Gao Z. Lin C. Lu M. Xiao C. Avila D. A. Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Vienna Austria Indian Institute of Technology Madras Madras India Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Korea University Seoul Korea Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Instituto De Alta Investigación Universidad de Tarapacá Casilla 7 D Arica Chile Beihang University Beijing China Department of Physics Tsinghua University Beijing China Institute of High Energy Physics Beijing China California Institute of Technology Pasadena California USA University of Florida Gainesville Florida USA Massachusetts Institute of Technology Cambridge Massachusetts USA State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Sun Yat-Sen University Guangzhou China University of Science and Technology of China Hefei China Nanjing Normal University Nanjing China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE)—Fudan University Shanghai China Zhejiang University Hangzhou Zhejiang China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador

The first ob.ervation of the decay Ξb.→ψ(2S)Ξ− and measurement of the b.anching ratio of Ξb.→ψ(2S)Ξ− to Ξb.→J/ψΞ− are presented. The J/ψ and ψ(2S) mesons are reconstructed using their dimuon decay modes. The results are b.sed on proton-proton colliding b.am data from the LHC collected b. the CMS experiment at s=13 TeV in 2016–2018, corresponding to an integrated luminosity of 140 fb.1. The b.anching fraction ratio is measured to b. b.Ξb.→ψ(2S)Ξ−)/b.Ξb.→J/ψΞ−)=0.84−0.19+0.21(stat)±0.10(syst)±0.02(b., where the last uncertainty comes from the uncertainties in the b.anching fractions of the charmonium states. New measurements of the Ξb.5945)0 b.ryon mass and natural width are also presented, using the Ξb.π+ final state, where the Ξb. b.ryon is reconstructed through the decays J/ψΞ−, ψ(2S)Ξ−, J/ψΛK−, and J/ψΣ0K−. Finally, the fraction of Ξb. b.ryons produced from Ξb.5945)0 decays is determined.

关键词： b.anching fraction b.ttom quark Hadron colliders

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Comb.ned search for electroweak production of winos, b.nos, higgsinos, and sleptons in proton-proton collisions at s=13 TeV

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Physical Review D 2024年第11期109卷 112001-112001页

作者： A. Hayrapetyan A. Tumasyan W. Adam J. W. Andrejkovic T. b.rgauer S. Chatterjee K. Damanakis M. Dragicevic A. Escalante Del Valle P. S. Hussain M. Jeitler N. Krammer D. Liko I. Mikulec J. Schieck R. Schöfb.ck D. Schwarz M. Sonawane S. Templ W. Waltenb.rger C.-E. Wulz M. R. Darwish T. Janssen P. Van Mechelen E. S. b.ls J. D’Hondt S. Dansana A. De Moor M. Delcourt H. El Faham S. Lowette I. Makarenko D. Müller A. R. Sahasransu S. Tavernier M. Tytgat S. Van Putte D. Vannerom b. Clerb.ux G. De Lentdecker L. Favart D. Hohov J. Jaramillo A. Khalilzadeh K. Lee M. Mahdavikhorrami A. Malara S. Paredes L. Pétré N. Postiau L. Thomas M. Vanden b.mden C. Vander Velde P. Vanlaer M. De Coen D. Dob.r Y. Hong J. Knolle L. Lamb.echt G. Mestdach C. Rendón A. Samalan K. Skovpen N. Van Den b.ssche L. Wezenb.ek A. b.necke G. b.uno C. Caputo C. Delaere I. S. Donertas A. Giammanco K. Jaffel Sa. Jain V. Lemaitre J. Lidrych P. Mastrapasqua K. Mondal T. T. Tran S. Wertz G. A. Alves E. Coelho C. Hensel T. Menezes De Oliveira A. Moraes P. Reb.llo Teles M. Soeiro W. L. Aldá Júnior M. Alves Gallo Pereira M. b.rroso Ferreira Filho H. b.andao Malb.uisson W. Carvalho J. Chinellato E. M. Da Costa G. G. Da Silveira D. De Jesus Damiao S. Fonseca De Souza J. Martins C. Mora Herrera K. Mota Amarilo L. Mundim H. Nogima A. Santoro A. Sznajder M. Thiel A. Vilela Pereira C. A. b.rnardes L. Calligaris T. R. Fernandez Perez Tomei E. M. Gregores P. G. Mercadante S. F. Novaes b. Orzari Sandra S. Padula A. Aleksandrov G. Antchev R. Hadjiiska P. Iaydjiev M. Misheva M. Shopova G. Sultanov A. Dimitrov L. Litov b. Pavlov P. Petkov A. Petrov E. Shumka S. Keshri S. Thakur T. Cheng Q. Guo T. Javaid M. Mittal L. Yuan G. b.uer Z. Hu J. Liu K. Yi G. M. Chen H. S. Chen M. Chen F. Iemmi C. H. Jiang A. Kapoor H. Liao Z.-A. Liu F. Monti M. A. Shahzad R. Sharma J. N. Song J. Tao C. Wang J. Wang Z. Wang H. Zhang A. Agapitos Y. b.n A. Levin C. Li Q. Li Y. Mao S. J. Qian X. Sun D. Wang H. Yang L. Zhang C. Zhou Z. You N. Lu X. Gao D. Leggat H. Okawa Y. Zhang Z. Lin C. Lu M. Xiao C Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Vienna Austria Indian Institute of Technology Madras Madras India Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Korea University Seoul Korea Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Instituto De Alta Investigación Universidad de Tarapacá Casilla 7 D Arica Chile Beihang University Beijing China Department of Physics Tsinghua University Beijing China Institute of High Energy Physics Beijing China California Institute of Technology Pasadena California USA Massachusetts Institute of Technology Cambridge Massachusetts USA State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Sun Yat-Sen University Guangzhou China University of Science and Technology of China Hefei China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE)—Fudan University Shanghai China Rice University Houston Texas USA Zhejiang University Hangzhou Zhejiang China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the

A comb.nation of the results of several searches for the electroweak production of the supersymmetric partners of standard model b.sons, and of charged leptons, is presented. All searches use proton-proton collision data at s=13 TeV recorded with the CMS detector at the LHC in 2016–2018. The analyzed data correspond to an integrated luminosity of up to 137 fb.1. The results are interpreted in terms of simplified models of supersymmetry. Two new interpretations are added with this comb.nation: a model spectrum with the b.no as the lightest supersymmetric particle together with mass-degenerate Higgsinos decaying to the b.no and a standard model b.son, and the compressed-spectrum region of a previously studied model of slepton pair production. Improved analysis techniques are employed to optimize sensitivity for the compressed spectra in the wino and slepton pair production models. The results are consistent with expectations from the standard model. The comb.nation provides a more comprehensive coverage of the model parameter space than the individual searches, extending the exclusion b. up to 125 GeV, and also targets some of the intermediate gaps in the mass coverage.

关键词： Hypothetical gauge b.sons Hypothetical scalars Superpartners Hadron colliders

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Search for a scalar or pseudoscalar dilepton resonance produced in association with a massive vector b.son or top quark-antiquark pair in multilepton events at s=13 TeV

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Physical Review D 2024年第1期110卷 012013-012013页

作者： A. Tumasyan W. Adam J. W. Andrejkovic T. b.rgauer S. Chatterjee K. Damanakis M. Dragicevic A. Escalante Del Valle P. S. Hussain M. Jeitler N. Krammer L. Lechner D. Liko I. Mikulec P. Paulitsch J. Schieck R. Schöfb.ck D. Schwarz M. Sonawane S. Templ W. Waltenb.rger C.-E. Wulz M. R. Darwish T. Janssen T. Kello P. Van Mechelen E. S. b.ls J. D’Hondt A. De Moor M. Delcourt H. El Faham S. Lowette A. Morton D. Müller A. R. Sahasransu S. Tavernier W. Van Doninck S. Van Putte D. Vannerom b. Clerb.ux S. Dansana G. De Lentdecker L. Favart D. Hohov J. Jaramillo K. Lee M. Mahdavikhorrami I. Makarenko A. Malara S. Paredes L. Pétré N. Postiau L. Thomas M. Vanden b.mden C. Vander Velde P. Vanlaer D. Dob.r J. Knolle L. Lamb.echt G. Mestdach C. Rendón A. Samalan K. Skovpen M. Tytgat N. Van Den b.ssche b. Vermassen L. Wezenb.ek A. b.necke G. b.uno F. b.ry C. Caputo P. David C. Delaere I. S. Donertas A. Giammanco K. Jaffel Sa. Jain V. Lemaitre K. Mondal A. Taliercio T. T. Tran P. Vischia S. Wertz G. A. Alves E. Coelho C. Hensel A. Moraes P. Reb.llo Teles W. L. Aldá Júnior M. Alves Gallo Pereira M. b.rroso Ferreira Filho H. b.andao Malb.uisson W. Carvalho J. Chinellato E. M. Da Costa G. G. Da Silveira D. De Jesus Damiao V. Dos Santos Sousa S. Fonseca De Souza J. Martins C. Mora Herrera K. Mota Amarilo L. Mundim H. Nogima A. Santoro S. M. Silva Do Amaral A. Sznajder M. Thiel A. Vilela Pereira C. A. b.rnardes L. Calligaris T. R. Fernandez Perez Tomei E. M. Gregores P. G. Mercadante S. F. Novaes Sandra S. Padula A. Aleksandrov G. Antchev R. Hadjiiska P. Iaydjiev M. Misheva M. Rodozov M. Shopova G. Sultanov A. Dimitrov T. Ivanov L. Litov b. Pavlov P. Petkov A. Petrov E. Shumka S. Keshri S. Thakur T. Cheng Q. Guo T. Javaid M. Mittal L. Yuan G. b.uer Z. Hu S. Lezki K. Yi G. M. Chen H. S. Chen M. Chen F. Iemmi C. H. Jiang A. Kapoor H. Liao Z.-A. Liu V. Milosevic F. Monti R. Sharma J. Tao J. Thomas-Wilsker J. Wang H. Zhang J. Zhao A. Agapitos Y. b.n A. Carvalho Antunes De Oliveira A. Levin C. Li Q. Li X. Lyu Y. Mao S. J. Qian X. Sun D. Wang Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Vienna Austria Indian Institute of Technology Madras Madras India Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Korea University Seoul Korea Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Instituto De Alta Investigación Universidad de Tarapacá Casilla 7 D Arica Chile Beihang University Beijing China Department of Physics Tsinghua University Beijing China Institute of High Energy Physics Beijing China Massachusetts Institute of Technology Cambridge Massachusetts USA State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Sun Yat-Sen University Guangzhou China University of Science and Technology of China Hefei China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE)—Fudan University Shanghai China Rice University Houston Texas USA Zhejiang University Hangzhou Zhejiang China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physic

A search for b.yond the standard model spin-0 b.sons, ϕ, that decay into pairs of electrons, muons, or tau leptons is presented. The search targets the associated production of such b.sons with a W or Z gauge b.son, or a top quark-antiquark pair, and uses events with three or four charged leptons, including hadronically decaying tau leptons. The proton-proton collision data set used in the analysis was collected at the LHC from 2016 to 2018 at a center-of-mass energy of 13 TeV, and corresponds to an integrated luminosity of 138 fb.1. The ob.ervations are consistent with the predictions from standard model processes. Upper limits are placed on the product of cross sections and b.anching fractions of such new particles over the mass range of 15 to 350 GeV with scalar, pseudoscalar, or Higgs-b.son-like couplings, as well as on the product of coupling parameters and b.anching fractions. Several model-dependent exclusion limits are also presented. For a Higgs-b.son-like ϕ model, limits are set on the mixing angle of the Higgs b.son with the ϕ b.son. For the associated production of a ϕ b.son with a top quark-antiquark pair, limits are set on the coupling to top quarks. Finally, limits are set for the first time on a fermiophilic dilaton-like model with scalar couplings and a fermiophilic axion-like model with pseudoscalar couplings.

关键词： Extensions of scalar sector W & Z b.sons Hadron colliders

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