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Title: Measurement of the tt¯ production cross-section as a function of jet multiplicity and jet transverse momentum in 7 TeV proton-proton collisions with the ATLAS detector

Journal Article · · Journal of High Energy Physics (Online)
 [1]
  1. Aix-Marseille Univ. and CNRS/IN2P3, Marseille (France). et al.
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The $$ t\overline{t} $$ production cross-section dependence on jet multiplicity and jet transverse momentum is reported for proton-proton collisions at a centre-of-mass energy of 7 TeV in the single-lepton channel. The data were collected with the ATLAS detector at the CERN Large Hadron Collider and comprise the full 2011 data sample corresponding to an integrated luminosity of 4.6 fb-1. Differential cross-sections are presented as a function of the jet multiplicity for up to eight jets using jet transverse momentum thresholds of 25, 40, 60, and 80 GeV, and as a function of jet transverse momentum up to the fifth jet. The results are shown after background subtraction and corrections for all known detector effects, within a kinematic range closely matched to the experimental acceptance. Several QCD-based Monte Carlo models are compared with the results. Sensitivity to the parton shower modelling is found at the higher jet multiplicities, at high transverse momentum of the leading jet and in the transverse momentum spectrum of the fifth leading jet. The MC@NLO+HERWIG MC is found to predict too few events at higher jet multiplicities.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Argonne National Laboratory (ANL), Argonne, IL (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Contributing Organization:
The ATLAS collaboration
Grant/Contract Number:
AC03-76SF00515; AC02-CH11357; AC02-98CH10886; AC02-05CH11231
OSTI ID:
1224345
Alternate ID(s):
OSTI ID: 1524010
Journal Information:
Journal of High Energy Physics (Online), Vol. 2015, Issue 1; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 22 works
Citation information provided by
Web of Science

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Cited By (7)

Top-quark physics at the Large Hadron Collider journal May 2017
Measurement of the t t ¯ production cross section in the τ + jets final state in p p collisions at s = 8     TeV using the ATLAS detector journal April 2017
Measurement of the Top Quark Pair Production Cross Section in Proton-Proton Collisions at s = 13     TeV journal February 2016
Measurements of top-quark pair differential cross-sections in the lepton+jets channel in pp collisions at $$\sqrt{s}=8\,~{\mathrm {TeV}}$$ s = 8 TeV using the ATLAS detector journal October 2016
Measurement of the $$\mathrm{t}\overline{\mathrm{t}} $$ t t ¯ production cross section using events in the $$\mathrm {e}\mu $$ e μ final state in pp collisions at $$\sqrt{s}=13\,\text {TeV} $$ s = 13 TeV journal March 2017
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
Search for heavy particles decaying into a top-quark pair in the fully hadronic final state in pp collisions at √s=13 TeV with the ATLAS detector text January 2019

Linked Research (8)

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