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Measurement of electrons from beauty hadron decays in pp collisions at sqrt{s} = 7 TeV

Abstract : 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.
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Submitted on : Friday, August 10, 2012 - 9:06:00 AM
Last modification on : Wednesday, December 2, 2020 - 12:04:03 PM

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B. Abelev, N. Arbor, G. Conesa Balbastre, J. Faivre, C. Furget, et al.. Measurement of electrons from beauty hadron decays in pp collisions at sqrt{s} = 7 TeV. Physics Letters B, Elsevier, 2013, 721, pp.13-23. ⟨10.1016/j.physletb.2013.01.069⟩. ⟨in2p3-00723477⟩

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