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Measurement of the b-hadron production cross section using decays to D*muX final states in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

By G. Aad, S. Albrand, Q. Buat, B. Clement, J. Collot, S. Crépé-Renaudin, B. Dechenaux, T. Delemontex, P.A. Delsart, M.H. Genest, J.Y. Hostachy, E. Laisne, F. Ledroit-Guillon, A. Lleres, A. Lucotte, F. Malek, J. Stark, X. Sun, B. Trocmé, J. Wang, C. Weydert, C. Biscarat, E. Cogneras, G. Rahal, F. Vannucci, D. Boumediene, Emmanuel Busato, D. Calvet, S. Calvet, Reina Coromoto Camacho Toro, Diane Cinca, J. Donini, R. Febbraro, N. Ghodbane, C. Guicheney, H. Liao, D. Pallin, Daniela Paredes Hernández, F. Podlyski, C. Santoni, F. Vazeille, L. Aperio Bella, B. Aubert, N. Berger, J. Colas, M. Delmastro, L. Di Ciaccio, T.K.O. Doan, S. Elles, C. Goy, T. Hryn'Ova, A. Jérémie, S. Jézéquel, M. Kataoka, J. Labbe, R. Lafaye, J. Leveque, V.P. Lombardo, N. Massol, P. Perrodo, E. Petit, H. Przysiezniak, E. Richter-Was, G. Sauvage, E. Sauvan, M. Schwoerer, T. Todorov, D. Tsionou, I. Wingerter-Seez, R. Zitoun, S. Abdel Khalek, H. Abreu, N. Andari, C. Arnault, E. Augé, P. Barrillon, M. Benoit, S. Binet, C. Bourdarios, C. De La Taille, J.B. De Vivie De Regie, L. Duflot, M. Escalier, L. Fayard, D. Fournier, J.-F. Grivaz, S. Henrot-Versillé, J. Hrivnac, L. Iconomidou-Fayard, J. Idarraga, M. Kado, N. Lorenzo Martinez, A. Lounis, N. Makovec, P. Matricon, F. Niedercorn, L. Poggioli, P. Puzo, A. Renaud, D. Rousseau, G. Rybkin, J.B. Sauvan, J. Schaarschmidt, A.C. Schaffer, E. Scifo, L. Serin, S. Simion, R. Tanaka, M. Teinturier, J.J. Veillet, I. Vukotic, F. Wicek, D. Zerwas, Z. Zhang, S. Aoun, C. P. Bee, C. Bertella, N. Bousson, J. C. Clémens, Y. Coadou, F. Djama, F. Etienne, L. Feligioni, D. Hoffmann, F. Hubaut, E. B. F. G. Knoops, E. Le Guirriec, B. Li, J. Maurer, E. Monnier, J. Odier, P. Pralavorio, A. Rozanov, M. Talby, N. Tannoury, S. Tisserant, J. Toth, F. Touchard and L. Vacavant

Abstract

See paper for full list of authors - 20 pages plus author list (41 pages total), 3 figures, 9 tables, submitted to Nuclear Physics BThe b-hadron production cross section is measured with the ATLAS detector in pp collisions at sqrt(s) = 7 TeV, using 3.3 pb^-1 of integrated luminosity, collected during the 2010 LHC run. The b-hadrons are selected by partially reconstructing D*muX final states. Differential cross sections are measured as functions of the transverse momentum and pseudorapidity. The measured production cross section for a b-hadron with pT>9 GeV and |eta|<2.5 is 32.7 pm 0.8 (stat) ^{+4.5}_{-6.8} (syst) ub, higher than the next-to-leading-order QCD predictions but consistent within the experimental and theoretical uncertainties

Topics: [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Publisher: 'Elsevier BV'
Year: 2012
DOI identifier: 10.1016/j.nuclphysb.2012.07.009
OAI identifier: oai:HAL:in2p3-00708403v1
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