Single Electrons from Heavy Flavor Decays in p+p Collisions at sqrt(s) = 200 GeV

Details Single Electrons from Heavy Flavor Decays in p+p Collisions at sqrt(s) = 200 GeV Single Electrons from Heavy Flavor Decays in p+p Collisions at sqrt(s) = 200 GeV

2005-08-15

arxiv.org/abs/hep-ex/0508034v1

Phys.Rev.Lett.96:032001,2006

Physics

High Energy Physics

High Energy Physics - Experiment

329 authors, 6 pages text, 3 figures. Submitted to Phys. Rev. Lett. Plain text data tables for the points plotted in figures f

Scientific paper

10.1103/PhysRevLett.96.032001

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.

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