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Title

Measurement of b -hadron pair production with the ATLAS detector in proton-proton collisions at √s = 8 TeV

CollaborationWith : Akilli, Ece / Ancu, Lucian Stefan / Benoit, Mathieu / Bilbao De Mendizabal, Javier / Calace, Noemi / Clark, Allan Geoffrey / Coccaro, Andrea / Delitzsch, Chris Malena / Della Volpe, Domenico / Di Bello, Francesco / Dubreuil, Arnaud / Ferrere, Didier / Golling, Tobias / Gonzalez Sevilla, Sergio / Iacobucci, Giuseppe / Jansky, Roland / Katre, Akshay / Khoo, Teng Jian / Lanfermann, Marie Christine / Lionti, Anthony Eric / March Ruiz, Luis / Mermod, Philippe / Nackenhorst, Olaf / Nessi, Marzio / Paolozzi, Lorenzo / Schramm, Steven / Sfyrla, Anna / Wu, Xin
Published in Journal of High Energy Physics. 2017, vol. 1711, p. 062-113
Collection Open Access - SCOAP3
Abstract A measurement of b -hadron pair production is presented, based on a data set corresponding to an integrated luminosity of 11.4 fb −1 of proton-proton collisions recorded at √s = 8 TeV with the ATLAS detector at the LHC. Events are selected in which a b -hadron is reconstructed in a decay channel containing J/ψ → μμ , and a second b -hadron is reconstructed in a decay channel containing a muon. Results are presented in a fiducial volume defined by kinematic requirements on three muons based on those used in the analysis. The fiducial cross section is measured to be 17.7 ± 0.1(stat.) ± 2.0(syst.) nb. A number of normalised differential cross sections are also measured, and compared to predictions from the P ythia 8, H erwig ++, M ad G raph 5_ a MC@NLO+P ythia 8 and S herpa event generators, providing new constraints on heavy flavour production.
Keywords B physicsHadron-Hadron scattering (experiments)
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arXiv: 1705.03374
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ATLAS COLLABORATION. Measurement of b -hadron pair production with the ATLAS detector in proton-proton collisions at √s = 8 TeV. In: Journal of High Energy Physics, 2017, vol. 1711, p. 062-113. https://archive-ouverte.unige.ch/unige:99918

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Deposited on : 2017-12-04

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