D_s meson production at central rapidity in proton--proton 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) , Laurent Aphecetche (4) , Guillaume Batigne (4) , E. Bergognon (4) , M. Bregant (4) , H. Delagrange (4) , O. Driga (4) , B. Erazmus (4) , Magali Estienne (4) , Marie Germain (4) , A. Lardeux (4) , F. Lefèvre (4) , L. Luquin (4) , Gines Martinez Garcia (4) , A. Mas (4) , L. Massacrier (4) , A. Matyja (4) , Philippe Pillot (4) , Y. Schutz (4) , Alexandre Shabetai (4) , Diego 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) , Maxime Guilbaud (6) , R. Tieulent (6) , A. Uras (6)

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

The pt-differential inclusive production cross section of the prompt charm-strange meson D_s in the rapidity range |y|<0.5 was measured in proton--proton collisions at sqrt(s)=7 TeV at the LHC using the ALICE detector. The analysis was performed on a data sample of 2.98 10^8 events collected with a minimum-bias trigger. The corresponding integrated luminosity is L_int=4.8 nb^-1. Reconstructing the decay D_s -.> phi pi, with phi -> KK, and its charge conjugate, about 480 D_s mesons were counted, after selection cuts, in the transverse momentum range 2

Domaines: Physique des Hautes Energies - Expérience [hep-ex]

B. Abelev, N. Arbor, G. Conesa Balbastre, J. Faivre, C. Furget, et al.. D_s meson production at central rapidity in proton--proton collisions at sqrt(s) = 7 TeV. Physics Letters B, 2012, 718, pp.279-294. ⟨10.1016/j.physletb.2012.10.049⟩. ⟨in2p3-00723482⟩