Search for top squark production in fully hadronic final states in proton-proton collisions at  s=13  TeV

descriptionPublicationkeyboard_double_arrow_right Article , Research , Preprint 10 Sep 2021Embargo end date: 01 Jan 2021 Turkey, United Kingdom, United Kingdom, Germany, Belarus, Turkey, Italy, Belgium, Turkey, Turkey, Spain, Croatia, Belgium, United States, France, Germany, France, Germany, Croatia, Spain, France, France, Germany, Greece, Spain, Hungary English Publisher:American Physical Society (APS)Journal:Physical Review D, volume 104 (issn: 2470-0010, eissn: 2470-0029,

Copyright policy )Funded by:UKRI | SCORE: Supply Chain Optim..., EC | LHCTOPVLQ, EC | AMVA4NewPhysics +4 projects

Authors: Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Bergauer, T.; Chatterjee, S.; Dragicevic, M.; +193 Authors

Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Bergauer, T.; Chatterjee, S.; Dragicevic, M.; Del Valle, A.; Escalante; Fruhwirth, R.; Jeitler, M.; Krammer, N.; Lechner; L.; Liko, D.; Mikulec, I; Pitters, F. M.; Schieck, J.; Schofbeck, R.; Spanring, M.; Templ, S.; Waltenberger, W.; Wulz, C-E; Chekhovsky, V; Litomin, A.; Makarenko, V; Darwish, M. R.; De Wolf, E. A.; Janssen, X.; Kello, T.; Lelek, A.; Sfar, H. Rejeb; Van Mechelen, P.; Van Putte, S.; Van Remortel, N.; Blekman, F.; Bols, E. S.; D'Hondt, J.; De; Clercq, J.; Delcourt, M.; Lowette, S.; Moortgat, S.; Morton; A.; Muller, D.; Sahasransu, A. R.; Tavernier, S.; Van; Doninck, W.; Van Mulders, P.; Beghin, D.; Bilin, B.; Clerbaux, B.; De Lentdecker, G.; Favart, L.; Grebenyuk, A.; Kalsi, A. K.; Lee, K.; Makarenko, I; Moureaux, L.; Petre, L.; Popov, A.; Postiau, N.; Starling, E.; Thomas, L.; Vander; Velde, C.; Vanlaer, P.; Vannerom, D.; Wezenbeek, L.; Cornelis, T.; Dobur, D.; Gruchala, M.; Mestdach, G.; Niedziela, M.; Roskas, C.; Skovpen, K.; Tytgat, M.; Verbeke; W.; Vermassen, B.; Vit, M.; Bethani, A.; Bruno, G.; Bury; F.; Caputo, C.; David, P.; Delaere, C.; Donertas, I. S.; Giammanco, A.; Lemaitre, V; Mondal, K.; Prisciandaro, J.; Taliercio, A.; Teklishyn, M.; Vischia, P.; Wertz, S.; Wuyckens, S.; Alves, G. A.; Hensel, C.; Moraes, A.; Alda; Junior, W. L.; Ferreira Filho, M. Barroso; Malbouisson, H. Brandao; Carvalho, W.; Chinellato, J.; Da Costa, E. M.; Da Silveira; G. G.; Damiao, D. De Jesus; De Souza, S. Fonseca; Martins, J.; Figueiredo, D. Matos; Herrera, C. Mora; Amarilo, K. Mota; Mundim, L.; Nogima, H.; Teles, P. Rebello; Sanchez Rosas, L. J.; Santoro, A.; Silva Do Amaral, S. M.; Sznajder, A.; Thiel; M.; Da Silva De Araujo, F. Torres; Pereira, A. Vilela; Bernardes, C. A.; Calligaris, L.; Fernandez Perez Tomei, T. R.; Gregores, E. M.; Lemos, D. S.; Mercadante, P. G.; Novaes, S. F.; Padula, Sandra S.; Aleksandrov, A.; Antchev, G.; Atanasov; I; Hadjiiska, R.; Iaydjiev, P.; Misheva, M.; Rodozov, M.; Shopova, M.; Sultanov, G.; Dimitrov, A.; Ivanov, T.; Litov; L.; Pavlov, B.; Petkov, P.; Petrov, A.; Cheng, T.; Fang; W.; Guo, Q.; Javaid, T.; Mittal, M.; Wang, H.; Yuan, L.; Ahmad, M.; Bauer, G.; Dozen, C.; Hu, Z.; Wang, Y.; Yi, K.; Chapon, E.; Chen, G. M.; Chen, H. S.; Chen, M.; Kapoor, A.; Leggat, D.; Liao, H.; Liu, Z-A; Sharma, R.; Spiezia, A.; Tao, J.; Thomas-Wilsker, J.; Wang, J.; Zhang; H.; Zhang, S.; Zhao, J.; Agapitos, A.; Ban, Y.; Chen, C.; Huang, Q.; Levin, A.; Li, Q.; Lu, M.; Lyu, X.; Mao; Y.; Qian, S. J.; Wang, D.; Wang, Q.; Xiao, J.; You, Z.;

doi: 10.1103/physrevd.104.052001 , 10.3204/pubdb-2021-01444 , 10.3204/pubdb-2021-03981 , 10.5445/ir/1000137743 , 10.48550/arxiv.2103.01290 , 10.18154/rwth-2021-10346 , 10.18154/rwth-2021-10332

arXiv: 2103.01290

handle: 10651/63047 , 10261/260554 , 10902/24711 , 10486/703194 , 11368/2995641 , 10281/476047 , 10446/191440 , 10679/8229 , 10067/1817760151162165141 , 11492/5339 , 10831/110979 , 11503/1913 , 11486/5600 , 11577/3413604 , 11573/1626397 , 11584/420570 , 11567/1058089 , 11568/1134066 , 11589/271102 , 11384/141504 , 11585/863149 , 20.500.11769/526752 , 2158/1298087 , 1854/LU-8754173 , 2318/1959230 , 10044/1/92027 , 11586/467144 , 11579/134736 , 11571/1477937 , 11563/158974 , 1911/111399

Search for top squark production in fully hadronic final states in proton-proton collisions at s=13 TeV

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Abstract

A search for production of the supersymmetric partners of the top quark, top squarks, is presented. The search is based on proton-proton collision events containing multiple jets, no leptons, and large transverse momentum imbalance. The data were collected with the CMS detector at the CERN LHC at a center-of-mass energy of 13 TeV, and correspond to an integrated luminosity of 137 fb$^{-1}$. The targeted signal production scenarios are direct and gluino-mediated top squark production, including scenarios in which the top squark and neutralino masses are nearly degenerate. The search utilizes novel algorithms based on deep neural networks that identify hadronically decaying top quarks and W bosons, which are expected in many of the targeted signal models. No statistically significant excess of events is observed relative to the expectation from the standard model, and limits on the top squark production cross section are obtained in the context of simplified supersymmetric models for various production and decay modes. Exclusion limits as high as 1310 GeV are established at the 95% confidence level on the mass of the top squark for direct top squark production models, and as high as 2260 GeV on the mass of the gluino for gluino-mediated top squark production models. These results represent a significant improvement over the results of previous searches for supersymmetry by CMS in the same final state.

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Turkey, United Kingdom, United Kingdom, Germany, Belarus, Turkey, Italy, Belgium, Turkey, Turkey, Spain, Croatia, Belgium, United States, France, Germany, France, Germany, Croatia, Spain, France, France, Germany, Greece, Spain, Hungary

Related Organizations

University of Illinois at Chicago
United States
Ghent University
Belgium
Deutsches Elektronen-Synchrotron DESY
Germany
University of Warsaw
Institute of Experimental Physics
Slovakia

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Keywords

transverse momentum: missing-energy, final state: ((n)jet), neutralino: mass, lepton, ddc:000, top: single production, 13000 GeV-cms, E(+)E(-) Collisions, information & general works, NEUTRALINO, Physics, Particles & Fields, ЭБ БГУ::ТЕХНИЧЕСКИЕ И ПРИКЛАДНЫЕ НАУКИ. ОТРАСЛИ ЭКОНОМИКИ::Ядерная техника, Models, Hadron-Hadron scattering (experiments), superpartners, info:eu-repo/classification/ddc/530, SUPERSYMMETRY, Naturalness, hadron colliders, Physics, 320, Si microstrip and pad detectors, squark: production, CERN LHC Coll, Top physics, Particle tracking detectors (Solid-state detectors), Physical Sciences, NATURALNESS, semiconductor detector: microstrip, PARTICLE PHYSICS, performance, p p: scattering, info:eu-repo/classification/ddc/000, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], BOTTOM, particles and fields, PAIR PRODUCTION, Particles & Fields, MODELS, Gluino, decay modes, E(+)E(-) COLLISIONS, TeV, top quark, Radiation damage to detector materials (solid state), PAIR PRODUCTION; E(+)E(-) COLLISIONS; SCALAR QUARKS; PHYSICS; SUPERSYMMETRY; NATURALNESS; NEUTRALINO; LEPTONS; BOTTOM; MODELS, stop: direct production, Science & Technology, 13 TeV, PARTICLE PHYSICS;LARGE HADRON COLLIDER;CMS, Squark, stop: decay modes, SCALAR QUARKS, LARGE HADRON COLLIDER, Computer science, Boson; Partons; Higgs Bosons, * Automatic Keywords *, LEPTONS, Supersymmetry, Experimental particle physics, p p: colliding beams, CMS: upgrade, CMS experiment, CMS Detector, GeV, channel cross section: upper limit, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], stop: mass: lower limit, tracking detector, squark: pair production, Computer science, information & general works, Bottom, Pair Production, radiation: damage, 000, CMS, gluino: mass, High energy physics ; Experimental particle physics ; LHC ; CMS ; Radiation-hard detectors ; Si microstrip and pad detectors ; Radiation damage to detector materials (solid state) ; Particle tracking detectors (Solid-state detectors) ; radiation: damage ; CMS: upgrade ; tracking detector ; semiconductor detector: design ; semiconductor detector: microstrip ; performance ; Hadron-Hadron scattering (experiments) ; Top physics ; p p: scattering ; p p: colliding beams ; top: single production, LHC, Radiation-hard detectors, W Bossons, data analysis method, CERN Lab, neural network, High Energy Physics Experiments; CMS; SUSY; Top Squark Fully Hadronic, Neutralino, top: mass, FOS: Physical sciences, Astronomy & Astrophysics, transverse momentum, 530, model: production, PHYSICS, Squark, CMS, statistical analysis, High energy physics, ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика, hep-ex, Física, Scalar Quarks, Leptons, Physics and Astronomy, supersymmetry, gluino: mass: lower limit, semiconductor detector: design, experimental results

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