Campus Units

Physics and Astronomy

Document Type

Article

Publication Version

Published Version

Publication Date

12-2006

Journal or Book Title

Physical Review Letters

Volume

97

Issue

25

First Page

252002

DOI

10.1103/PhysRevLett.97.252002

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=200 GeV has been measured by the PHENIX experiment at the BNL Relativistic Heavy Ion Collider over the transverse momentum range 0.3 < p(T)< 9 GeV/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 +/- 0.02(stat)+/- 0.18(sys) for 0.3 < p(T)< 9 GeV/c. The total charm production cross section at this energy has also been deduced to be sigma(cc)=567 +/- 57(stat)+/- 193(sys) mu b.

Comments

This article is published as Adare, A., S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, H. Al-Bataineh, J. Alexander et al. "Measurement of High-p T Single Electrons from Heavy-Flavor Decays in p+ p Collisions at s= 200 GeV." Physical review letters 97, no. 25 (2006): 252002. DOI:10.1103/PhysRevLett.97.252002. Posted with permission.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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