Search for long-lived particles using nonprompt jets and missing transverse momentum with proton-proton collisions at √s = 13 TeV

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The CMS Collaboration , Sirunyan , A M , Eerola , P , Forthomme , L , Kirschenmann , H , Österberg , K , Voutilainen , M , Garcia , F , Havukainen , J , Heikkilä , J , Järvinen , T , Karimäki , V , Kinnunen , R , Lampén , T , Lassila-Perini , K K , Laurila , S , Lehti , S , Linden , T , Luukka , P , Mäenpää , T , Siikonen , H , Tuominen , E , Tuominiemi , J & Tuuva , T 2019 , ' Search for long-lived particles using nonprompt jets and missing transverse momentum with proton-proton collisions at √s = 13 TeV ' , Physics Letters B , vol. 797 , 134876 . https://doi.org/10.1016/j.physletb.2019.134876

Title: Search for long-lived particles using nonprompt jets and missing transverse momentum with proton-proton collisions at √s = 13 TeV
Author: The CMS collaboration; Sirunyan, A. M.; Eerola, Paula; Forthomme, Laurent; Kirschenmann, Henning; Österberg, Kenneth; Voutilainen, Mikko; Garcia, F.; Havukainen, Joona; Heikkilä, Jaana; Järvinen, T.; Karimäki, Veikko; Kinnunen, Ritva; Lampén, Tapio; Lassila-Perini, Katri (Kati); Laurila, Santeri; Lehti, Sami; Linden, Tomas; Luukka, Panja; Mäenpää, T; Siikonen, Hannu; Tuominen, Eija; Tuominiemi, Jorma; Tuuva, Tuure
Contributor organization: University Management
Department of Physics
Helsinki Institute of Physics
Particle Physics and Astrophysics
Staff Services
Eija Tuominen / Principal Investigator
Date: 2019-10-10
Language: eng
Number of pages: 25
Belongs to series: Physics Letters B
ISSN: 0370-2693
DOI: https://doi.org/10.1016/j.physletb.2019.134876
URI: http://hdl.handle.net/10138/306588
Abstract: A search for long-lived particles decaying to displaced, nonprompt jets and missing transverse momentum is presented. The data sample corresponds to an integrated luminosity of 137 fb(-1) of proton-proton collisions at a center-of-mass energy of 13 TeV collected by the CMS experiment at the CERN LHC in 2016-2018. Candidate signal events containing nonprompt jets are identified using the timing capabilities of the CMS electromagnetic calorimeter. The results of the search are consistent with the background prediction and are interpreted using a gauge-mediated supersymmetry breaking reference model with a gluino next-to-lightest supersymmetric particle. In this model, gluino masses up to 2100, 2500, and 1900 GeV are excluded at 95% confidence level for proper decay lengths of 0.3, 1, and 100 m, respectively. These are the best limits to date for such massive gluinos with proper decay lengths greater than similar to 0.5 m. (C) 2019 The Author. Published by Elsevier B.V.
Description: All the figures and tables, including additional supplementary figures and tables, can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/EXO-19-001 (CMS Public Pages)
Subject: 114 Physical sciences
Exotica
Long-lived particles
SQUARK
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion


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