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Studies of inclusive four-jet production with two b-tagged jets in proton-proton collisions at 7 TeV


CMS Collaboration; Canelli, F; Caminada, L; Chiochia, V; De Cosa, A; Kilminster, B; Robmann, P; et al (2016). Studies of inclusive four-jet production with two b-tagged jets in proton-proton collisions at 7 TeV. Physical Review D (Particles, Fields, Gravitation and Cosmology), 94(11):112005.

Abstract

Measurements are presented of the cross section for the production of at least four jets, of which at least two originate from b quarks, in proton-proton collisions. Data collected with the CMS detector at the LHC at a center-of-mass energy of 7 TeV are used, corresponding to an integrated luminosity of 3  pb$^{−1}$. The cross section is measured as a function of the jet transverse momentum for pT>20  GeV, and of the jet pseudorapidity for |η|<2.4 (b jets), 4.7 (untagged jets). The correlations in azimuthal angle and pT between the jets are also studied. The inclusive cross section is measured to be σ(pp→2b+2j+X)=69±3(stat)±24(syst)  nb. The η and $p_{T}$ distributions of the four jets and the correlations between them are well reproduced by event generators that combine perturbative QCD calculations at next-to-leading-order accuracy with contributions from parton showers and multiparton interactions.

Abstract

Measurements are presented of the cross section for the production of at least four jets, of which at least two originate from b quarks, in proton-proton collisions. Data collected with the CMS detector at the LHC at a center-of-mass energy of 7 TeV are used, corresponding to an integrated luminosity of 3  pb$^{−1}$. The cross section is measured as a function of the jet transverse momentum for pT>20  GeV, and of the jet pseudorapidity for |η|<2.4 (b jets), 4.7 (untagged jets). The correlations in azimuthal angle and pT between the jets are also studied. The inclusive cross section is measured to be σ(pp→2b+2j+X)=69±3(stat)±24(syst)  nb. The η and $p_{T}$ distributions of the four jets and the correlations between them are well reproduced by event generators that combine perturbative QCD calculations at next-to-leading-order accuracy with contributions from parton showers and multiparton interactions.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2016
Deposited On:11 Jan 2017 17:15
Last Modified:11 Jan 2017 17:15
Publisher:American Physical Society
ISSN:1550-7998
Publisher DOI:https://doi.org/10.1103/PhysRevD.94.112005

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Licence: Creative Commons: Attribution 3.0 Unported (CC BY 3.0)

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