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Abstract
Results are reported from a search for supersymmetric particles in proton-proton collisions in the final state with a single lepton, multiple jets, including at least one b-tagged jet, and large missing transverse momentum. The search uses a sample of proton-proton collision data at s=13 TeV recorded by the CMS experiment at the LHC, corresponding to an integrated luminosity of 35.9 fb−1. The observed event yields in the signal regions are consistent with those expected from standard model backgrounds. The results are interpreted in the context of simplified models of supersymmetry involving gluino pair production, with gluino decay into either on- or off-mass-shell top squarks. Assuming that the top squarks decay into a top quark plus a stable, weakly interacting neutralino, scenarios with gluino masses up to about 1.9 TeV are excluded at 95% confidence level for neutralino masses up to about 1 TeV.Received 12 May 2017DOI:https://doi.org/10.1103/PhysRevLett.119.151802Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.© 2017 CERN, for the CMS CollaborationPhysics Subject Headings (PhySH)Research AreasHypothetical particle physics modelsParticle decaysSupersymmetric modelsPhysical SystemsSuperpartnersTechniquesHadron collidersParticles & Fields
Highlights
A central goal of the physics program of the CMS experiment at the CERN LHC [1] is the search for new particles and phenomena beyond the standard model (SM), in particular, for supersymmetry (SUSY) [2,3,4,5,6,7,8,9]
In models based on SUSY, new particles are introduced such that all fermionic degrees of freedom in the SM are paired with corresponding bosonic
The method for predicting the background yields takes advantage of the near absence of correlation between the MJ and mT variables in R1–R4, which is a consequence of the high jet multiplicity, pmT iss, and ST requirements applied in the baseline selection [16]
Summary
A central goal of the physics program of the CMS experiment at the CERN LHC [1] is the search for new particles and phenomena beyond the standard model (SM), in particular, for supersymmetry (SUSY) [2,3,4,5,6,7,8,9]. Details on the simulated SM background samples, including other processes with smaller contributions (single top quark, tt þ bosons, diboson, and tttt production) are given in Ref.
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