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

B. Abelev; N. Arbor; G. Conesa Balbastre; J. Faivre; C. Furget; R. Guernane; S. Kox; J.S. Real; C. Silvestre; R. Vernet; I. Belikov; B. Hippolyte; C. Kuhn; C. Roy; X. Sanchez Castro; S. Senyukov; L. Aphecetche; Guillaume Batigne; E. Bergognon; M. Bregant; H. Delagrange; O. Driga; B. Erazmus; M. Estienne; M. Germain; A. Lardeux; F. Lefèvre; L. Luquin; G. Martınez Garcıa; A. Mas; L. Massacrier; A. Matyja; P. Pillot; Y. Schutz; A. Shabetai; D. Stocco; Y.W. Baek; A. Baldit; V. Barret; N. Bastid; P. Crochet; P. Dupieux; R. Ichou; X. Lopez; F. Manso; M. Marchisone; S. Porteboeuf-Houssais; P. Rosnet; B. Vulpescu; X. Zhang; C. Cheshkov; B. Cheynis; L. Ducroux; M. Guilbaud; R. Tieulent; A. Uras; B. Boyer; I. Das; B. Espagnon; C. Hadjidakis; I. Hřivnáčová; I. Lakomov; Y. Le Bornec; C. Suire; J.D. Tapia Takaki; L. Valencia Palomo

doi:10.1016/j.physletb.2013.01.069,

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

B. Abelev N. Arbor ¹ G. Conesa Balbastre ¹ J. Faivre C. Furget ¹ R. Guernane ¹ S. Kox ¹ J.S. Real ¹ C. Silvestre ¹ R. Vernet ² I. Belikov ³ B. Hippolyte ³ C. Kuhn ³ C. Roy ³ X. Sanchez Castro ³ S. Senyukov ³ L. Aphecetche ⁴ Guillaume Batigne ⁴ E. Bergognon ⁴ M. Bregant ⁴ H. Delagrange ⁴ O. Driga ⁴ B. Erazmus ⁴ M. Estienne ⁴ M. Germain ⁴ A. Lardeux ⁴ F. Lefèvre ⁴ L. Luquin ⁴ G. Martınez Garcıa ⁴ A. Mas ⁴ L. Massacrier ⁴ A. Matyja ⁴ P. Pillot ⁴ Y. Schutz ⁴ A. Shabetai ⁴ D. Stocco ⁴ Y.W. Baek ⁵ A. Baldit ⁵ V. Barret ⁵ N. Bastid ⁵ P. Crochet ⁵ P. Dupieux ⁵ R. Ichou ⁵ X. Lopez ⁵ F. Manso ⁵ M. Marchisone ⁵ S. Porteboeuf-Houssais ⁵ P. Rosnet ⁵ B. Vulpescu ⁵ X. Zhang ⁵ C. Cheshkov ⁶ B. Cheynis ⁶ L. Ducroux ⁶ M. Guilbaud ⁶ R. Tieulent ⁶ A. Uras ⁶ B. Boyer ¹ I. Das ⁷ B. Espagnon ⁷ C. Hadjidakis ⁷ I. Hřivnáčová ⁷ I. Lakomov ⁷ Y. Le Bornec ⁷ C. Suire ⁷ J.D. Tapia Takaki ⁷ L. Valencia Palomo ⁷

1 LPSC - Laboratoire de Physique Subatomique et de Cosmologie

2 CC-IN2P3 - Centre de Calcul de l'IN2P3

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

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.

Document type :

Journal articles

Physics Letters B, Elsevier, 2013, 721, pp.13-23. <10.1016/j.physletb.2013.01.069,>

Domain :

Physics [physics] / High Energy Physics - Experiment [hep-ex]

Physics [physics] / Nuclear Experiment [nucl-ex]

http://hal.in2p3.fr/in2p3-00723477
Contributor : Emmanuelle Vernay <>
Submitted on : Friday, August 10, 2012 - 9:06:00 AM
Last modification on : Monday, August 26, 2013 - 3:57:30 PM

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

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