# 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 inverse picobarns. The cross section is measured as a function of the jet transverse momentum for pt 20 GeV, and of the jet pseudorapidity for abs(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 to 2 b + 2 j + X) = 69 +/- 3 (stat) +/- 24 (syst) nb. The eta and pt 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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Article dans une revue
Physical Review D, American Physical Society, 2016, 94, pp.112005. 〈10.1103/PhysRevD.94.112005〉
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http://hal.in2p3.fr/in2p3-01364849
Contributeur : Sylvie Flores <>
Soumis le : mardi 13 septembre 2016 - 07:14:39
Dernière modification le : mardi 16 janvier 2018 - 16:00:34

### Citation

V. Khachatryan, M. Besançon, F. Couderc, M. Dejardin, D. Denegri, et al.. Studies of inclusive four-jet production with two b-tagged jets in proton-proton collisions at 7 TeV. Physical Review D, American Physical Society, 2016, 94, pp.112005. 〈10.1103/PhysRevD.94.112005〉. 〈in2p3-01364849〉

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