Search for long-lived particles using delayed photons in proton-proton collisions at $\sqrt{s}=$ 13 TeV

descriptionPublicationkeyboard_double_arrow_right Research , Report , Article , Preprint 01 Jan 2019Embargo end date: 01 Jan 2019 India, France, United Kingdom, Italy, Belgium, France, France, Germany, Greece, Italy, Italy, Brazil, Germany, Belgium, Italy, Italy, Italy English Publisher:Deutsches Elektronen-Synchrotron, DESY, HamburgFunded by:EC | LHCTOPVLQ, EC | INSIGHTS, EC | AMVA4NewPhysics

Authors: Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Brandstetter, J.; Dragicevic, M.; +193 Authors

Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Brandstetter, J.; Dragicevic, M.; Eroe, J.; Del Valle, A. Escalante; Flechl, M.; Fruehwirth, R.; Jeitler; M.; Krammer, N.; Kraetschmer, I; Liko, D.; Madlener, T.; Mikulec, I; Rad, N.; Schieck, J.; Schoefbeck, R.; Spanring; M.; Spitzbart, D.; Waltenberger, W.; Wulz, C-E; Zarucki, M.; Drugakov, V; Mossolov, V; Gonzalez, J. Suarez; Darwish, M.; R.; De Wolf, E. A.; Di Croce, D.; Janssen, X.; Lelek, A.; Pieters, M.; Sfar, H. Rejeb; Van Haevermaet, H.; Van Mechelen; P.; Van Putte, S.; Van Remortel, N.; Blekman, F.; Bols, E.; S.; Chhibra, S. S.; D'Hondt, J.; De Clercq, J.; Lontkovskyi; D.; Lowette, S.; Marchesini, I; Moortgat, S.; Python, Q.; Skovpen, K.; Tavernier, S.; Van Doninck, W.; Van Mulders, P.; Beghin, D.; Bilin, B.; Brun, H.; Clerbaux, B.; De; Lentdecker, G.; Delannoy, H.; Dorney, B.; Favart, L.; Grebenyuk, A.; Kalsi, A. K.; Popov, A.; Postiau, N.; Starling, E.; Thomas, L.; Vander Velde, C.; Vanlaer, P.; Vannerom, D.; Cornelis, T.; Dobur, D.; Khvastunov, I; Niedziela, M.; Roskas, C.; Trocino, D.; Tytgat, M.; Verbeke; W.; Vermassen, B.; Vit, M.; Bondu, O.; Bruno, G.; Caputo; C.; David, P.; Delaere, C.; Delcourt, M.; Giammanco, A.; Lemaitre, V; Prisciandaro, J.; Saggio, A.; Marono, M. Vidal; Vischia, P.; Zobec, J.; Alves, F. L.; Alves, G. A.; Correia; Silva, G.; Hensel, C.; Moraes, A.; Rebello Teles, P.; Belchior Batista Das Chagas, E.; Carvalho, W.; Chinellato, J.; Coelho, E.; Costa, E. M.; Silveira, G. G.; De Jesus Damiao, D.; De Oliveira Martins, C.; Fonseca De Souza, S.; Huertas; Guativa, L. M.; Malbouisson, H.; Martins, J.; Matos Figueiredo; D.; Medina Jaime, M.; Melo De Almeida, M.; Mora Herrera, C.; Mundim, L.; Nogima, H.; Prado Silva, W. L.; Sanchez Rosas, L.; J.; Santoro, A.; Sznajder, A.; Thiel, M.; Tonelli Manganote; E. J.; Torres Da Silva De Araujo, F.; Vilela Pereira, A.; 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.; Hadjiiska; R.; Iaydjiev, P.; Misheva, M.; Rodozov, M.; Shopova, M.; Sultanov, G.; Bonchev, M.; Dimitrov, A.; Ivanov, T.; Litov; L.; Pavlov, B.; Petkov, P.; Fang, W.; Gao, X.; Yuan, L.; Chen, G. M.; Chen, H. S.; Chen, M.; Jiang, C. H.; Leggat, D.; Liao, H.; Liu, Z.; Spiezia, A.; Tao, J.; Yazgan, E.; Zhang, H.; Zhang, S.; Zhao, J.; Agapitos, A.; Ban, Y.; Chen, G.; Levin, A.; Li, J.; Li, L.; Li, Q.; Mao, Y.; Qian, S. J.; Wang, D.; Wang, Q.; Ahmad, M.; Hu; Z.; Wang, Y.; Xiao, M.; Avila, C.; Cabrera, A.; Florez; C.; Gonzalez Hernandez, C. F.;

Search for long-lived particles using delayed photons in proton-proton collisions at $\sqrt{s}=$ 13 TeV

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Abstract

A search for long-lived particles decaying to photons and weakly interacting particles, using protonproton collision data at root s = 13 TeV collected by the CMS experiment in 2016-2017 is presented. The data set corresponds to an integrated luminosity of 77.4 fb(-1). Results are interpreted in the context of supersymmetry with gauge-mediated supersymmetry breaking, where the neutralino is long-lived and decays to a photon and a gravitino. Limits are presented as a function of the neutralino proper decay length and mass. For neutralino proper decay lengths of 0.1, 1, 10, and 100 m, masses up to 320, 525, 360, and 215 GeV are excluded at 95% confidence level, respectively. We extend the previous best limits in the neutralino proper decay length by up to one order of magnitude, and in the neutralino mass by up to 100 GeV.

Programa Estatal de Fomento de la Investigacion Cientifica y Tecnica de Excelencia Maria de Maeztu: MDM-2015-0509

Programa Estatal de Fomento de la Investigacion Cientifica y Tecnica de Excelencia Maria de Maeztu

Fonds pour la Formation a la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium)

Rachadapisek Sompot Fund for Postdoctoral Fellowship, Chulalongkorn University (Thailand)

Chulalongkorn Academic into Its 2nd Century Project Advancement Project (Thailand)

F. R. S.-FNRS (Belgium) under the Excellence of Science-EOS-be.h project: 30820817

Janos Bolyai Research Scholarship of the Hungarian Academy of Sciences (Hungary)

Lendulet (Momentum) Program of the Hungarian Academy of Sciences (Hungary)

F. R. S.-FNRS (Belgium) under the Excellence of Science-EOS-be.h project

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India, France, United Kingdom, Italy, Belgium, France, France, Germany, Greece, Italy, Italy, Brazil, Germany, Belgium, Italy, Italy, Italy

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Keywords

p p: scattering, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 13000 GeV-cms, Particles & Fields, MODELS, gluino: pair production, FOS: Physical sciences, Astronomy & Astrophysics, 530, channel cross section: upper limit, gravitino, Physics, Particles & Fields, High Energy Physics - Experiment, ENERGY, High Energy Physics - Experiment (hep-ex), S046UPH, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Particle Physics Experiments, SUPERGRAVITY, info:eu-repo/classification/ddc/530, SUPERSYMMETRY, supersymmetry: symmetry breaking, Physics, LHC, CMS, Science & Technology, hep-ex, CMS, Physics, decay: length, S015XL, mass dependence, neutralino: mass: lower limit, particle: interaction, photon: single production, SUPERSYMMETRY; SUPERGRAVITY; BREAKING; ENERGY; EXTENSION; MODELS, CERN LHC Coll, gravitation, Physical Sciences, Centre for High Energy Physics, particle: long-lived, photon: pair production, p p: colliding beams, EXTENSION, BREAKING, experimental results

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