Measurement of electrons from beauty hadron decays in pp collisions at root s=7 TeV


Abelev B., Adam J., Adamova D., Adare A. M., Aggarwal M. M., Rinella G. A., ...More

PHYSICS LETTERS B, vol.721, no.1-3, pp.13-23, 2013 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 721 Issue: 1-3
  • Publication Date: 2013
  • Doi Number: 10.1016/j.physletb.2013.01.069
  • Journal Name: PHYSICS LETTERS B
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.13-23
  • Keywords: LHC, ALICE experiment, pp collisions, Single electrons, Heavy flavor production, Beauty production, PROTON-PROTON COLLISIONS, MESON PRODUCTION, RAPIDITY
  • Bursa Uludag University Affiliated: No

Abstract

The production cross section of electrons from semileptonic decays of beauty hadrons was measured at mid-rapidity (vertical bar y vertical bar < 0.8) in, the transverse momentum range 1 < p(T) < 8 GeV/c with the ALICE experiment at the CERN LHC in pp collisions at a center of mass energy root 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. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.