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: University of Helsinki, University Management
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Department of Physics
University of Helsinki, Particle Physics and Astrophysics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Department of Physics
University of Helsinki, University Management
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Staff Services
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, University Management
University of Helsinki, University Management
Date: 2019-10-10
Language: eng
Number of pages: 25
Belongs to series: Physics Letters B
ISSN: 0370-2693
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.
Subject: 114 Physical sciences
Exotica
Long-lived particles
SQUARK
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