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Measurement of the bb¯ dijet cross section in pp collisions at √s = 7 TeV with the ATLAS detector

CollaborationWith : Ancu, Lucian Stefan / Bilbao De Mendizabal, Javier / Calace, Noemi / Chatterjee, Avishek / Clark, Allan Geoffrey / Coccaro, Andrea / Delitzsch, Chris Malena / Della Volpe, Domenico / Ferrere, Didier / Gadomski, Szymon / Golling, Tobias / Gonzalez Sevilla, Sergio / Gramling, Johanna Léna / Guescini, Francesco / Iacobucci, Giuseppe / Katre, Akshay / Khoo, Teng Jian / Lionti, Anthony Eric / March Ruiz, Luis / Mermod, Philippe / Miucci, Antonio / Nackenhorst, Olaf / Paolozzi, Lorenzo / Ristic, Branislav / Schramm, Steven / Sfyrla, Anna / Vallecorsa, Sofia / Wu, Xin
Published in European Physical Journal. C. 2016, vol. 76, no. 12, p. 670
Collection Open Access - SCOAP3
Abstract The dijet production cross section for jets containing a b -hadron ( b -jets) has been measured in proton–proton collisions with a centre-of-mass energy of s=7 TeV, using the ATLAS detector at the LHC. The data used correspond to an integrated luminosity of 4.2fb-1 . The cross section is measured for events with two identified b -jets with a transverse momentum pT>20 GeV and a minimum separation in the η – ϕ plane of ΔR=0.4 . At least one of the jets in the event is required to have pT>270 GeV. The cross section is measured differentially as a function of dijet invariant mass, dijet transverse momentum, boost of the dijet system, and the rapidity difference, azimuthal angle and angular distance between the b -jets. The results are compared to different predictions of leading order and next-to-leading order perturbative quantum chromodynamics matrix elements supplemented with models for parton-showers and hadronization.
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ATLAS COLLABORATION. Measurement of the bb¯ dijet cross section in pp collisions at √s = 7 TeV with the ATLAS detector. In: European Physical Journal. C, 2016, vol. 76, n° 12, p. 670. https://archive-ouverte.unige.ch/unige:90874

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Deposited on : 2017-01-05

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