Single electrons from heavy flavor decays in p+p collisions at s**(1/2) = 200-GeV
Aug, 2005Citations per year
Abstract:
The invariant differential cross section for inclusive electron production in p+p collisions at sqrt(s) = 200 GeV has been measured by the PHENIX experiment at the Relativistic Heavy Ion Collider over the transverse momentum range $0.4 <= p_T <= 5.0 GeV/c at midrapidity (eta <= 0.35). The contribution to the inclusive electron spectrum from semileptonic decays of hadrons carrying heavy flavor, i.e. charm quarks or, at high p_T, bottom quarks, is determined via three independent methods. The resulting electron spectrum from heavy flavor decays is compared to recent leading and next-to-leading order perturbative QCD calculations. The total cross section of charm quark-antiquark pair production is determined as sigma_(c c^bar) = 0.92 +/- 0.15 (stat.) +- 0.54 (sys.) mb.Note:
- 329 authors, 6 pages text, 3 figures. v2 is version accepted for publication in Phys. Rev. Lett. HEPdata tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html
- 25.75.Nq
- 25.75.-q
- proton-proton inclusive interactions
- electron production
- meson leptonic decay
- semileptonic decays
- meson resonances
- charm particles
- p p: colliding beams
- p p: inclusive reaction
References(27)
Figures(3)