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

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 |?|<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 ?(pp?2b+2j+X)=69±3(stat)±24(syst)??nb. The ? and pTdistributions 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.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Fuente: Phys. Rev. D, Vol. 94, Num. 11, Pag. 112005 (2016)

Editorial: American Physical Society

 Fecha de publicación: 01/12/2016

Nº de páginas: 24

Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevD.94.112005

ISSN: 1550-7998,1550-2368,2470-0010,2470-0029

Url de la publicación: https://doi.org/10.1103/PhysRevD.94.112005