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Search for supersymmetry in final states with missing transverse momentum and multiple b-jets in proton-proton collisions at √s=13 TeV with the ATLAS detector

Aaboud, M ; Aad, G ; Abbott, B. ; Abdinov, O ; Abeloos, B ; Abidi, S. H. ; Åkesson, Torsten LU orcid ; Bocchetta, Simona LU ; Doglioni, Caterina LU and Hedberg, Vincent LU , et al. (2018) In Journal of High Energy Physics 2018(6).
Abstract
A search for supersymmetry involving the pair production of gluinos decaying via third-generation squarks into the lightest neutralino (χ˜10) is reported. It uses LHC proton-proton collision data at a centre-of-mass energy s=13 TeV with an integrated luminosity of 36.1 fb−1 collected with the ATLAS detector in 2015 and 2016. The search is performed in events containing large missing transverse momentum and several energetic jets, at least three of which must be identified as originating from b-quarks. To increase the sensitivity, the sample is divided into subsamples based on the presence or absence of electrons or muons. No excess is found above the predicted background. For χ˜10 masses below approximately 300 GeV, gluino masses of less... (More)
A search for supersymmetry involving the pair production of gluinos decaying via third-generation squarks into the lightest neutralino (χ˜10) is reported. It uses LHC proton-proton collision data at a centre-of-mass energy s=13 TeV with an integrated luminosity of 36.1 fb−1 collected with the ATLAS detector in 2015 and 2016. The search is performed in events containing large missing transverse momentum and several energetic jets, at least three of which must be identified as originating from b-quarks. To increase the sensitivity, the sample is divided into subsamples based on the presence or absence of electrons or muons. No excess is found above the predicted background. For χ˜10 masses below approximately 300 GeV, gluino masses of less than 1.97 (1.92) TeV are excluded at 95% confidence level in simplified models involving the pair production of gluinos that decay via top (bottom) squarks. An interpretation of the limits in terms of the branching ratios of the gluinos into third-generation squarks is also provided. These results improve upon the exclusion limits obtained with the 3.2 fb−1 of data collected in 2015.[Figure not available: see fulltext.]. © 2018, The Author(s). (Less)
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publishing date
type
Contribution to journal
publication status
published
subject
keywords
Hadron-Hadron scattering (experiments)
in
Journal of High Energy Physics
volume
2018
issue
6
article number
2018:107
publisher
Springer
external identifiers
  • scopus:85049188946
ISSN
1029-8479
DOI
10.1007/JHEP06(2018)107
language
English
LU publication?
yes
additional info
Export Date: 17 July 2018
id
72460768-4ef5-4451-aad3-3e25c96fa082
alternative location
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85049188946&doi=10.1007%2fJHEP06%282018%29107&partnerID=40&md5=001d7316ff46c9eb7bfbffeeec658420
date added to LUP
2018-07-17 10:44:19
date last changed
2023-04-08 14:53:14
@article{72460768-4ef5-4451-aad3-3e25c96fa082,
  abstract     = {{A search for supersymmetry involving the pair production of gluinos decaying via third-generation squarks into the lightest neutralino (χ˜10) is reported. It uses LHC proton-proton collision data at a centre-of-mass energy s=13 TeV with an integrated luminosity of 36.1 fb−1 collected with the ATLAS detector in 2015 and 2016. The search is performed in events containing large missing transverse momentum and several energetic jets, at least three of which must be identified as originating from b-quarks. To increase the sensitivity, the sample is divided into subsamples based on the presence or absence of electrons or muons. No excess is found above the predicted background. For χ˜10 masses below approximately 300 GeV, gluino masses of less than 1.97 (1.92) TeV are excluded at 95% confidence level in simplified models involving the pair production of gluinos that decay via top (bottom) squarks. An interpretation of the limits in terms of the branching ratios of the gluinos into third-generation squarks is also provided. These results improve upon the exclusion limits obtained with the 3.2 fb−1 of data collected in 2015.[Figure not available: see fulltext.]. © 2018, The Author(s).}},
  author       = {{Aaboud, M and Aad, G and Abbott, B. and Abdinov, O and Abeloos, B and Abidi, S. H. and Åkesson, Torsten and Bocchetta, Simona and Doglioni, Caterina and Hedberg, Vincent and Jarlskog, Göran and Kalderon, Charles and Lytken, Else and Mankinen, Katja and Mjörnmark, Ulf and Poulsen, Trine and Smirnova, Oxana and Viazlo, Oleksandr}},
  issn         = {{1029-8479}},
  keywords     = {{Hadron-Hadron scattering (experiments)}},
  language     = {{eng}},
  number       = {{6}},
  publisher    = {{Springer}},
  series       = {{Journal of High Energy Physics}},
  title        = {{Search for supersymmetry in final states with missing transverse momentum and multiple b-jets in proton-proton collisions at √s=13 TeV with the ATLAS detector}},
  url          = {{http://dx.doi.org/10.1007/JHEP06(2018)107}},
  doi          = {{10.1007/JHEP06(2018)107}},
  volume       = {{2018}},
  year         = {{2018}},
}