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Title
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Measurement of jet multiplicity distributions in production in pp collisions at = 7 TeV
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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| 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 fb(-1). Using a procedure to associate jets to decay products of the top quarks, the differential cross section of the t (t) over 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. |
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Language
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English
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Source (journal)
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European physical journal : C : particles and fields. - Berlin
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Publication
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Berlin
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2014
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ISSN
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1434-6044
1434-6052
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DOI
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10.1140/EPJC/S10052-014-3014-0
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Volume/pages
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74
:8
(2014)
, 29 p.
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Article Reference
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3014
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ISI
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000340824000001
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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