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Measurement of jet multiplicity distributions in $\mathrm {t}\overline{\mathrm {t}}$ production in pp collisions at $\sqrt{s} = 7\,\text {TeV} $

2014-08-20Journal article Open access
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dc.contributor.authorCMS collaboration (2231 authors)
dc.contributor.authorHollar, Jonathan
dc.contributor.authorNayak, Aruna
dc.contributor.authorCalpas, Betty
dc.contributor.authorBargassa, Pedrame
dc.contributor.authorBeirão Da Cruz E Silva, Cristóvão
dc.contributor.authorFaccioli, Pietro
dc.contributor.authorFerreira Parracho, Pedro Guilherme
dc.contributor.authorGallinaro, Michele
dc.contributor.authorNguyen, Federico
dc.contributor.authorRodrigues Antunes, Joao
dc.contributor.authorSeixas, Joao
dc.contributor.authorVarela, Joao
dc.contributor.authorVischia, Pietro
dc.contributor.authorLloret Iglesias, Lara
dc.contributor.authorDavid Tinoco Mendes, Andre
dc.contributor.authorMusella, Pasquale
dc.contributor.authorSilva, Pedro
dc.contributor.authorPela, Joao
dc.contributor.authorLeonardo, Nuno
dc.date.accessioned2019-02-04T03:10:28Z
dc.date.available2019-02-04T03:10:28Z
dc.date.issued2014-08-20
dc.date.updated2019-02-04T03:10:27Z
dc.description.abstractThe 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 $\,\text {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 $\,\text {fb}^{-1}$ . Using a procedure to associate jets to decay products of the top quarks, the differential cross section of the $\mathrm {t}\overline{\mathrm {t}}$ 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.
dc.description.versionPeer Reviewed
dc.identifierEur.Phys.J. C75 (2015) 216; DOI 10.1140/epjc/s10052-014-3014-0, 10.1140/epjc/s10052-015-3437-2
dc.identifier.urihttp://dx.doi.org/10.1140/epjc/s10052-014-3014-0, 10.1140/epjc/s10052-015-3437-2
dc.identifier.urihttp://hdl.handle.net/10400.26/26564
dc.language.isoeng
dc.titleMeasurement of jet multiplicity distributions in $\mathrm {t}\overline{\mathrm {t}}$ production in pp collisions at $\sqrt{s} = 7\,\text {TeV} $
dc.typejournal article
dspace.entity.typePublication
rcaap.rightsopenAccesspt
rcaap.typearticle

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