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Measurement of D ⁎± , D ± and Ds± meson production cross sections in pp collisions at √s = 7 TeV with the ATLAS detector

CollaborationWith : Ancu, Lucian Stefan / Barone, Gaetano / Bell, William / Benhar Noccioli, Eleonora / Bilbao De Mendizabal, Javier / Clark, Allan Geoffrey / Delitzsch, Chris Malena / Della Volpe, Domenico / Doglioni, Caterina / Ferrere, Didier / Gadomski, Szymon / Golling, Tobias / Gonzalez Sevilla, Sergio / Gramling, Johanna Léna / Guescini, Francesco / Iacobucci, Giuseppe / Katre, Akshay / La Rosa, Alessandro / Mermod, Philippe / Miucci, Antonio / Muenstermann, Daniel / Paolozzi, Lorenzo / Picazio, Attilio / Ristic, Branislav / Schramm, Steven / Tykhonov, Andrii / Vallecorsa, Sofia / Wu, Xin
Published in Nuclear Physics. B. 2016, vol. 907, p. 717-763
Collection Open Access - SCOAP3
Abstract The production of D⁎± , D± and Ds± charmed mesons has been measured with the ATLAS detector in pp collisions at s=7 TeV at the LHC, using data corresponding to an integrated luminosity of 280 nb−1 . The charmed mesons have been reconstructed in the range of transverse momentum 3.5<pT(D)<100 GeV and pseudorapidity |η(D)|<2.1 . The differential cross sections as a function of transverse momentum and pseudorapidity were measured for D⁎± and D± production. The next-to-leading-order QCD predictions are consistent with the data in the visible kinematic region within the large theoretical uncertainties. Using the visible D cross sections and an extrapolation to the full kinematic phase space, the strangeness-suppression factor in charm fragmentation, the fraction of charged non-strange D mesons produced in a vector state, and the total cross section of charm production at s=7 TeV were derived.
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ATLAS COLLABORATION. Measurement of D ⁎± , D ± and Ds± meson production cross sections in pp collisions at √s = 7 TeV with the ATLAS detector. In: Nuclear Physics. B, 2016, vol. 907, p. 717-763. https://archive-ouverte.unige.ch/unige:83539

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Deposited on : 2016-05-09

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