Search for supersymmetry in proton-proton collisions at 13 TeV using identified top quarks
Author(s)
Type
Journal Article
Abstract
A search for supersymmetry is presented based on proton-proton collision events containing identified
hadronically decaying top quarks, no leptons, and an imbalance pmiss
T in transverse momentum. The data
were collected with the CMS detector at the CERN LHC at a center-of-mass energy of 13 TeV, and
correspond to an integrated luminosity of 35.9 fb−1. Search regions are defined in terms of the multiplicity of
bottom quark jet and top quark candidates, the pmiss
T , the scalar sum of jet transverse momenta, and
the mT2 mass variable. No statistically significant excess of events is observed relative to the expectation from
the standard model. Lower limits on the masses of supersymmetric particles are determined at 95% confidence
level in the context of simplified models with top quark production. For a model with direct top
squark pair production followed by the decay of each top squark to a top quark and a neutralino, top squark
masses up to 1020 GeVand neutralino masses up to 430 GeVare excluded. For a model with pair production
of gluinos followed by the decay of each gluino to a top quark-antiquark pair and a neutralino, gluino masses
up to 2040 GeV and neutralino masses up to 1150 GeV are excluded. These limits extend previous results.
hadronically decaying top quarks, no leptons, and an imbalance pmiss
T in transverse momentum. The data
were collected with the CMS detector at the CERN LHC at a center-of-mass energy of 13 TeV, and
correspond to an integrated luminosity of 35.9 fb−1. Search regions are defined in terms of the multiplicity of
bottom quark jet and top quark candidates, the pmiss
T , the scalar sum of jet transverse momenta, and
the mT2 mass variable. No statistically significant excess of events is observed relative to the expectation from
the standard model. Lower limits on the masses of supersymmetric particles are determined at 95% confidence
level in the context of simplified models with top quark production. For a model with direct top
squark pair production followed by the decay of each top squark to a top quark and a neutralino, top squark
masses up to 1020 GeVand neutralino masses up to 430 GeVare excluded. For a model with pair production
of gluinos followed by the decay of each gluino to a top quark-antiquark pair and a neutralino, gluino masses
up to 2040 GeV and neutralino masses up to 1150 GeV are excluded. These limits extend previous results.
Date Issued
2018-01-31
Date Acceptance
2017-10-30
Citation
Physical Review D - Particles, Fields, Gravitation and Cosmology, 2018, 97 (1)
ISSN
1550-2368
Publisher
American Physical Society
Journal / Book Title
Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume
97
Issue
1
Copyright Statement
Published 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. Funded by SCOAP3
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. Funded by SCOAP3
License URL
Subjects
Science & Technology
Physical Sciences
Astronomy & Astrophysics
Physics, Particles & Fields
Physics
HADRON COLLIDERS
MEASURING MASSES
MISSING ENERGY
PARTICLE
EXTENSION
NEUTRINO
BOSON
MODEL
LHC
Publication Status
Published
Article Number
012007