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Title: Measurement of jet multiplicity distributions in t t-bar production in pp collisions at sqrt(s) = 7 TeV

Abstract

The normalised differential top quark-antiquark production cross section is measured as a function of the jet multiplicity in proton-proton collisions at a centre-of-mass energy of 7 TeV at the LHC with the CMS detector. The measurement is performed in both the dilepton and lepton + jets decay channels using data corresponding to an integrated luminosity of 5.0 inverse femtobarns. Using a procedure to associate jets to decay products of the top quarks, the differential cross section of the t t-bar production is determined as a function of the additional jet multiplicity in the lepton + jets channel. Furthermore, the fraction of events with no additional jets is measured in the dilepton channel, as a function of the threshold on the jet transverse momentum. The measurements are compared with predictions from perturbative quantum chromodynamics and no significant deviations are observed.

Authors:
 [1]
+ Show Author Affiliations
  1. Yerevan Physics Institute (Armenia). et al.
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Org.:
CMS Collaboration
OSTI Identifier:
1177126
Report Number(s):
CMS-TOP-12-018; CERN-PH-EP-2014-048; FERMILAB-PUB-14-167-CMS
Journal ID: ISSN 1434-6052; arXiv eprint number arXiv:1404.3171
Resource Type:
Accepted Manuscript
Journal Name:
European Physical Journal. C, Particles and Fields (Online)
Additional Journal Information:
Journal Name: European Physical Journal. C, Particles and Fields (Online); Journal Volume: 74; Journal Issue: 8; Related Information: See Erratum version, http://dx.doi.org/10.1140/epjc/s10052-015-3437-2 which is OSTIID 1234827; Journal ID: ISSN 1434-6052
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Chatrchyan, S. Measurement of jet multiplicity distributions in t t-bar production in pp collisions at sqrt(s) = 7 TeV. United States: N. p., 2014. Web. doi:10.1140/epjc/s10052-014-3014-0.
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Chatrchyan, S. Measurement of jet multiplicity distributions in t t-bar production in pp collisions at sqrt(s) = 7 TeV. United States. https://doi.org/10.1140/epjc/s10052-014-3014-0
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Chatrchyan, S. Wed . "Measurement of jet multiplicity distributions in t t-bar production in pp collisions at sqrt(s) = 7 TeV". United States. https://doi.org/10.1140/epjc/s10052-014-3014-0. https://www.osti.gov/servlets/purl/1177126.
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@article{osti_1177126,
title = {Measurement of jet multiplicity distributions in t t-bar production in pp collisions at sqrt(s) = 7 TeV},
author = {Chatrchyan, S.},
abstractNote = {The normalised differential top quark-antiquark production cross section is measured as a function of the jet multiplicity in proton-proton collisions at a centre-of-mass energy of 7 TeV at the LHC with the CMS detector. The measurement is performed in both the dilepton and lepton + jets decay channels using data corresponding to an integrated luminosity of 5.0 inverse femtobarns. Using a procedure to associate jets to decay products of the top quarks, the differential cross section of the t t-bar production is determined as a function of the additional jet multiplicity in the lepton + jets channel. Furthermore, the fraction of events with no additional jets is measured in the dilepton channel, as a function of the threshold on the jet transverse momentum. The measurements are compared with predictions from perturbative quantum chromodynamics and no significant deviations are observed.},
doi = {10.1140/epjc/s10052-014-3014-0},
journal = {European Physical Journal. C, Particles and Fields (Online)},
number = 8,
volume = 74,
place = {United States},
year = {2014},
month = {8}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.1140/epjc/s10052-014-3014-0
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