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Measurement of differential production cross-sections for a Z boson in association with b-jets in 7 TeV proton-proton collisions with the ATLAS detector

CollaborationWith : Alexandre, Gauthier / Ancu, Lucian Stefan / Barone, Gaetano / Bell, Paul / Bell, William / Benhar Noccioli, Eleonora / Bilbao De Mendizabal, Javier / Bucci, Francesca / Camacho Toro, Reina / Clark, Allan Geoffrey / Delitzsch, Chris Malena / Della Volpe, Domenico / Doglioni, Caterina / Ferrere, Didier / Gadomski, Szymon / Gonzalez Sevilla, Sergio / Goulette, Marc / Gramling, Johanna Léna / Guescini, Francesco / Iacobucci, Giuseppe / Katre, Akshay / La Rosa, Alessandro / Mermod, Philippe / Miucci, Antonio / Muenstermann, Daniel / Nektarijevic, Snezana / Nessi, Marzio / Nikolics, Katalin / Picazio, Attilio / Pohl, Martin / Rosbach, Kilian / Tykhonov, Andrii / Vallecorsa, Sofia / Wu, Xin
Published in Journal of High Energy Physics. 2014, vol. 1410, p. 141-190
Collection Open Access - SCOAP3
Abstract Measurements of differential production cross-sections of a Z boson in association with b -jets in pp collisions at √s = 7 TeV are reported. The data analysed correspond to an integrated luminosity of 4.6 fb −1 recorded with the ATLAS detector at the Large Hadron Collider. Particle-level cross-sections are determined for events with a Z boson decaying into an electron or muon pair, and containing b -jets. For events with at least one b -jet, the cross-section is presented as a function of the Z boson transverse momentum and rapidity, together with the inclusive b -jet cross-section as a function of b -jet transverse momentum, rapidity and angular separations between the b -jet and the Z boson. For events with at least two b -jets, the cross-section is determined as a function of the invariant mass and angular separation of the two highest transverse momentum b -jets, and as a function of the Z boson transverse momentum and rapidity. Results are compared to leading-order and next-to-leading-order perturbative QCD calculations.
Keywords Electroweak interactionHadron-Hadron ScatteringQCDHeavy quark production
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arXiv: 1407.3643
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ATLAS COLLABORATION. Measurement of differential production cross-sections for a Z boson in association with b-jets in 7 TeV proton-proton collisions with the ATLAS detector. In: Journal of High Energy Physics, 2014, vol. 1410, p. 141-190. https://archive-ouverte.unige.ch/unige:55761

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Deposited on : 2015-04-27

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