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

The CMS Collaboration, A. M. Sirunyan, P. Eerola, L. Forthomme, H. Kirschenmann, K. Österberg, M. Voutilainen, F. Garcia, J. Havukainen, J. K. Heikkila, V. Karimäki, R. Kinnunen, T. Lampen, K. Lassila-Perini, S. Laurila, S. Lehti, T. Linden, P. Luukka, T. Maenpaa, H. SiikonenE. Tuominen, J. Tuominiemi, T. Tuuva

Research output: Contribution to journalArticleScientificpeer-review

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.

Original languageEnglish
Article number112003
JournalPhysical Review D
Volume100
Issue number11
Number of pages24
ISSN2470-0010
DOIs
Publication statusPublished - 4 Dec 2019
MoE publication typeA1 Journal article-refereed

Fields of Science

  • 114 Physical sciences

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