Measurement of charm production at central rapidity in proton-proton collisions at root s=7 TeV

Abelev B., Abrahantes Quintana A., Adamova D., Adare A. M., Aggarwal M. M., Rinella G. A., ...More

JOURNAL OF HIGH ENERGY PHYSICS, vol.2012, no.1, 2012 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 2012 Issue: 1
  • Publication Date: 2012
  • Doi Number: 10.1007/jhep01(2012)128
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: Hadron-Hadron Scattering, PP COLLISIONS, ALICE
  • Bursa Uludag University Affiliated: No


The p(t)-differential inclusive production cross sections of the prompt charmed mesons D-0, D+, and D*(+) in the rapidity range vertical bar y vertical bar < 0.5 were measured in proton-proton collisions at root s = 7 TeV at the LHC using the ALICE detector. Reconstructing the decays D-0 -> K-pi(+), D+ -> K-pi(+)pi(+), D*(+) -> D-0 pi(+), and their charge conjugates, about 8,400 D-0, 2,900 D+, and 2,600 D*(+) mesons with 1 < p(t) < 24 GeV/c were counted, after selection cuts, in a data sample of 3.14 x 10(8) events collected with a minimum-bias trigger (integrated luminosity L-int = 5 nb(-1)). The results are described within uncertainties by predictions based on perturbative QCD.