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

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]
  1. Yerevan Physics Institute (Armenia). et al.
Publication Date:
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
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
Research Org:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Orgs:
CMS Collaboration
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS