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Title: Measurement of $$\mathrm{ t \bar{t} } $$ production with additional jet activity, including b quark jets, in the dilepton decay channel using pp collisions at $$\sqrt{s} =$$ 8 TeV

Journal Article · · European Physical Journal. C, Particles and Fields
 [1]
  1. Yerevan Physics Inst. (YerPhI) (Armenia). et al.
+ Show Author Affiliations

© 2016, CERN for the benefit of the CMS collaboration. Jet multiplicity distributions in top quark pair (t t ¯) events are measured in pp collisions at a centre-of-mass energy of 8 TeV with the CMS detector at the LHC using a data set corresponding to an integrated luminosity of 19.7fb-1. The measurement is performed in the dilepton decay channels (e + e - , μ + μ - , and e ± μ ∓ ). The absolute and normalized differential cross sections for t t ¯ production are measured as a function of the jet multiplicity in the event for different jet transverse momentum thresholds and the kinematic properties of the leading additional jets. The differential t t ¯ b and t t ¯ b b ¯ cross sections are presented for the first time as a function of the kinematic properties of the leading additional b jets. Furthermore, the fraction of events without additional jets above a threshold is measured as a function of the transverse momenta of the leading additional jets and the scalar sum of the transverse momenta of all additional jets. The data are compared and found to be consistent with predictions from several perturbative quantum chromodynamics event generators and a next-to-leading order calculation.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Organization:
CMS Collaboration
Grant/Contract Number:
AC02-07CH11359; AC02-05CH11231
OSTI ID:
1226339
Alternate ID(s):
OSTI ID: 1411634
Report Number(s):
FERMILAB-PUB-15-465-CMS; arXiv eprint number arXiv:1510.03072; TRN: US1601627
Journal Information:
European Physical Journal. C, Particles and Fields, Vol. 76, Issue 379; ISSN 1434-6044
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 25 works
Citation information provided by
Web of Science

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Cited By (12)

Measurement of the mass of the top quark in decays with a J/ψ meson in pp collisions at 8 TeV journal December 2016
Measurement of the differential cross sections for top quark pair production as a function of kinematic event variables in p p collisions at s = 7 and 8 TeV journal September 2016
Searches for R -parity-violating supersymmetry in p p collisions at s = 8     TeV in final states with 0–4 leptons journal December 2016
Measurement of differential cross sections for the production of top quark pairs and of additional jets in lepton + jets events from p p collisions at s = 13     TeV journal June 2018
Measurement of lepton differential distributions and the top quark mass in $$t\bar{t}$$ t t ¯ production in pp collisions at $$\sqrt{s}=8$$ s = 8  TeV with the ATLAS detector journal November 2017
Study of the underlying event in top quark pair production in $$\mathrm {p}\mathrm {p}$$ p p collisions at 13 $$~\text {Te}\text {V}$$ Te journal February 2019
Top-quark physics at the Large Hadron Collider journal May 2017
Search for associated production of a Higgs boson and a single top quark in proton-proton collisions at s = 13     TeV journal May 2019
Off-shell top quarks with one jet at the LHC: a comprehensive analysis at NLO QCD text January 2016
Searches for R-parity-violating supersymmetry in pp collisions at √s=8 TeV in final states with 0–4 leptons text January 2016
Measurement of the mass of the top quark in decays with a $J/\psi$ meson in pp collisions at 8 TeV text January 2016
Top-quark physics at the Large Hadron Collider text January 2016

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