Search for long-lived particles using delayed photons in proton-proton collisions at √s = 13 TeV

descriptionPublicationkeyboard_double_arrow_right Article 01 Jan 2019 Germany, Italy, Brazil, Germany English Publisher:KarlsruheJournal:Physical ReviewFunded by:EC | INSIGHTS, EC | LHCTOPVLQ, EC | AMVA4NewPhysics

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

CMS Collaboration; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Brandstetter, J.; Dragicevic, M.; Erö, J.; Escalante Del Valle, A.; Flechl, M.; Frühwirth, R.; Jeitler, M.; Krammer, N.; Krätschmer, I.; Liko, D.; Madlener, T.; Mikulec, I.; Rad, N.; Schieck, J.; Schöfbeck, R.; Spanring, M.; Spitzbart, D.; Waltenberger, W.; Wulz, C.-E.; Zarucki, M.; Drugakov, V.; Mossolov, V.; Suarez Gonzalez, J.; Darwish, M. R.; De Wolf, E. A.; Di Croce, D.; Janssen, X.; Lelek, A.; Pieters, M.; Rejeb Sfar, H.; Van Haevermaet, H.; Mechelen, P. Van; Putte, S. Van; 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.; Doninck, W. Van; 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.; Vidal Marono, M.; 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. Da; Silveira, G. G. Da; 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 Da 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.; Tomei, T. R. Fernandez Perez; 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.; González Hernández, C. F.; Segura Delgado, M. A.; Mejia Guisao, J.; Ruiz Alvarez, J. D.; Salazar González, C. A.; Vanegas Arbelaez, N.; Giljanović, D.; Godinovic, N.; Lelas, D.; Puljak, I.; Sculac, T.; Antunovic, Z.; Kovac, M.; Brigljevic, V.; Ferencek, D.; Kadija, K.; Mesic, B.; Roguljic, M.;

doi: 10.5445/ir/1000104220

handle: 11588/837521 , 10446/150258 , 11449/232947 , 11573/1415414 , 11584/288278 , 11567/993459 , 11568/1027303 , 11589/208542 , 11384/83288 , 11585/715943 , 11563/145868

Search for long-lived particles using delayed photons in proton-proton collisions at √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 √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.

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Germany, Italy, Brazil, Germany

Related Organizations

University of Basilicata
Italy
Sao Paulo State University
Brazil
Karlsruhe Institute of Technology
Germany
University of Genoa
Italy
Scuola Normale Superiore
Italy

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Keywords

Particle Physics; LHC; supersymmetry; long-lived particles, Physics, ddc:530, CMS HEP long-lived particles, Particles & Fields; Hadron colliders, info:eu-repo/classification/ddc/530, 530, High Energy Physics - Experiment; High Energy Physics - Experiment, High Energy Physics - Experiment

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