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Physics Letters B 721 (2013) 13-23
Measurement of electrons from beauty hadron decays in pp collisions at sqrt{s} = 7 TeV
B. Abelev, N. Arbor1, G. Conesa Balbastre1, J. Faivre, C. Furget1, R. Guernane1, S. Kox1, J.S. Real1, C. Silvestre1, R. Vernet2, I. Belikov3, B. Hippolyte3, C. Kuhn3, C. Roy3, X. Sanchez Castro3, S. Senyukov3, L. Aphecetche4, Guillaume Batigne4, E. Bergognon4, M. Bregant4, H. Delagrange4, O. Driga4, B. Erazmus4, M. Estienne4, M. Germain4, A. Lardeux4, F. Lefèvre4, L. Luquin4, G. Martınez Garcıa4, A. Mas4, L. Massacrier4, A. Matyja4, P. Pillot4, Y. Schutz4, A. Shabetai4, D. Stocco4, Y. .W. Baek5, A. Baldit5, V. Barret5, N. Bastid5, P. Crochet5, P. Dupieux5, R. Ichou5, X. Lopez5, F. Manso5, M. Marchisone5, S. Porteboeuf-Houssais5, P. Rosnet5, B. Vulpescu5, X. Zhang5, c. Cheshkov6, B. Cheynis6, L. Ducroux6, M. Guilbaud6, R. Tieulent6, A. Uras6, B. Boyer1, I. Das7, B. Espagnon7, C. Hadjidakis7, I. Hřivnáčová7, I. Lakomov7, Y. Le Bornec7, C. Suire7, J.D. Tapia Takaki7, L. Valencia Palomo7
For the ALICE collaboration(s)

The production cross section of electrons from semileptonic decays of beauty hadrons was measured at mid-rapidity (|y| < 0.8) in the transverse momentum range 1 < pt < 8 Gev/c with the ALICE experiment at the CERN LHC in pp collisions at a center of mass energy sqrt{s} = 7 TeV using an integrated luminosity of 2.2 nb^{-1}. Electrons from beauty hadron decays were selected based on the displacement of the decay vertex from the collision vertex. A perturbative QCD calculation agrees with the measurement within uncertainties. The data were extrapolated to the full phase space to determine the total cross section for the production of beauty quark-antiquark pairs.
1:  LPSC - Laboratoire de Physique Subatomique et de Cosmologie
2:  CC IN2P3 - Centre de Calcul de l'inst. national de phy. nucléaire et de phy. des particules
3:  DRS-IPHC - Département Recherches Subatomiques
4:  SUBATECH - Laboratoire SUBATECH Nantes
5:  LPC - Laboratoire de Physique Corpusculaire [Clermont-Ferrand]
6:  IPNL - Institut de Physique Nucléaire de Lyon
7:  IPNO - Institut de Physique Nucléaire d'Orsay
Physics/High Energy Physics - Experiment

Physics/Nuclear Experiment
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