Skip to Main content Skip to Navigation
Journal articles

Measurement of charm production at central rapidity in proton-proton collisions at sqrt(s) = 2.76 TeV

B. Abelev R. Vernet 1 I. Belikov 2 B. Hippolyte 2 S. Jangal 2 C. Kuhn 2 C. Roy 2 X. Sanchez Castro 2 S. Senyukov 2 R. Wan 2 Laurent Aphecetche 3 Guillaume Batigne 3 E. Bergognon 3 M. Bregant 3 H. Delagrange 3 O. Driga 3 Magali Estienne 3 Marie Germain 3 A. Lardeux 3 F. Lefèvre 3 M. Lenhardt 3 L. Luquin 3 Gines Martinez Garcia 3 A. Mas 3 L. Massacrier 3, 4 A. Matyja 3 P. Pillt 3 Y. Schutz 3 Alexandre Shabetai 3 Diego Stocco 3 C. Cheshkov 4 B. Cheynis 4 L. Ducroux 4 J.-Y. Grossiord 4 M. Guilbaud 4 R. Tieulent 4 A. Uras 4 Y. Zoccarato 4 Sang Un Ahn 5 Y.W. Baek 6 A. Baldit 6 V. Barret 6 N. Bastid 6 P. Crochet 6 P. Dupieux 6 R. Ichou 6 X. Lopez 6 F. Manso 6 M. Marchisone 6 S. Porteboeuf-Houssais 6 P. Rosnet 6 B. Vulpescu 6 X. Zhang 6 N. Arbor 7 G. Conesa Balbastre 7 J. Faivre 7 C. Furget 7 R. Guernane 7 S. Kox 7 J.S. Real 7 C. Silvestre 7 J. Castillo Castellanos 8 J.L. Charvet 8 C. Geuna 8 S. Pal 8 H. Pereira da Costa 8 A. Rakotozafindrabe 8 H. Yang 8 B. Espagnon 9 L. Valencio Palomo 9
Abstract : The pt-differential production cross sections of the prompt (B feed-down subtracted) charmed mesons D0, D+, and D*+ in the rapidity range |y|<0.5, and for transverse momentum 1< pt <12 GeV/c, were measured in proton-proton collisions at sqrt(s) = 2.76 TeV with the ALICE detector at the Large Hadron Collider. The analysis exploited the hadronic decays D0 -> K pi, D+ -> K pi pi, D*+ -> D0 pi, and their charge conjugates, and was performed on a L_{int} = 1.35 nb^{-1} event sample collected in 2011 with a minimum-bias trigger. The total charm production cross section at sqrt(s) = 2.76 TeV and at 7 TeV was evaluated by extrapolating to the full phase space the pt-differential production cross sections at sqrt(s) = 2.76 TeV and our previous measurements at sqrt(s) = 7 TeV. The results were compared to existing measurements and to perturbative-QCD calculations. The fraction of cubar D mesons produced in a vector state was also determined.
Complete list of metadatas

http://hal.in2p3.fr/in2p3-00705656
Contributor : Dominique Girod <>
Submitted on : Friday, June 8, 2012 - 9:53:53 AM
Last modification on : Tuesday, January 5, 2021 - 9:30:19 AM

Links full text

Identifiers

Citation

B. Abelev, R. Vernet, I. Belikov, B. Hippolyte, S. Jangal, et al.. Measurement of charm production at central rapidity in proton-proton collisions at sqrt(s) = 2.76 TeV. Journal of High Energy Physics, Springer, 2012, 7, pp.191. ⟨10.1007/JHEP07(2012)191⟩. ⟨in2p3-00705656⟩

Share

Metrics

Record views

599