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

Title
Studies of inclusive four-jet production with two b-tagged jets in proton-proton collisions at 7 TeV
Author
김태정
Keywords
DYNAMICAL-APPROACH; PARTON; MPI
Issue Date
2016-12
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v. 94, Issue 11, No. 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 p(T) > 20 GeV, and of the jet pseudorapidity for |eta| < 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 sigma(pp -> 2b + 2j + X) = 69 +/- 3(stat) +/- 24(syst) nb. The eta 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.
URI
https://journals.aps.org/prd/abstract/10.1103/PhysRevD.94.112005https://repository.hanyang.ac.kr/handle/20.500.11754/101838
ISSN
2470-0010; 2470-0029
DOI
10.1103/PhysRevD.94.112005
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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