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

(CMS Collaboration) Sirunyan, Albert M; Antunović, Željko; Brigljević, Vuko; Ceci, Saša; Ferenček, Dinko; Giljanović, Duje; Godinović, Nikola; Kadija, Krešo; Kovač, Marko; Lelas, Damir; Mesić, Benjamin; Puljak, Ivica; Roguljić, Matej; Starodumov, Andrey; Đurić, Senka; Šuša, Tatjana; Šćulac, Toni; Woods, Nathaniel (2019) Search for long-lived particles using nonprompt jets and missing transverse momentum with proton-proton collisions at root s=13 TeV. Physics Letters B, 797 . ISSN 0370-2693

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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.

Item Type: Article
Uncontrolled Keywords: High energy physics ; Experimental particle physics ; LHC ; CMS ; Particle Physics Experiments ; Hadron-Hadron scattering (experiments) ; Supersymmetry ; Higgs physics ; Beyond Standard Model ; Photon production ; Elementary Particles and Fields ; B physics ; Exotica ; Long-lived particles
Subjects: NATURAL SCIENCES > Physics
Divisions: Division of Experimental Physics
Depositing User: Dinko Ferenček
Date Deposited: 13 Mar 2020 13:49
Last Modified: 13 Mar 2020 13:54
URI: http://fulir.irb.hr/id/eprint/5349
DOI: 10.1016/j.physletb.2019.134876

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