Measurement of High-pT Single Electrons from Heavy-Flavor Decays in p+p Collisions at s=200GeV

A. Adare et al. (PHENIX Collaboration)
Phys. Rev. Lett. 97, 252002 – Published 21 December 2006

Abstract

The momentum distribution of electrons from decays of heavy flavor (charm and bottom) for midrapidity |y|<0.35 in p+p collisions at s=200GeV has been measured by the PHENIX experiment at the BNL Relativistic Heavy Ion Collider over the transverse momentum range 0.3<pT<9GeV/c. Two independent methods have been used to determine the heavy-flavor yields, and the results are in good agreement with each other. A fixed-order-plus-next-to-leading-log perturbative QCD calculation agrees with the data within the theoretical and experimental uncertainties, with the data/theory ratio of 1.71±0.02stat±0.18sys for 0.3<pT<9GeV/c. The total charm production cross section at this energy has also been deduced to be σcc¯=567±57stat±193sysμb.

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  • Received 6 September 2006

DOI:https://doi.org/10.1103/PhysRevLett.97.252002

©2006 American Physical Society

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Vol. 97, Iss. 25 — 22 December 2006

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