Campus Units

Physics and Astronomy

Document Type

Article

Publication Version

Published Version

Publication Date

1-2006

Journal or Book Title

Physical Review Letters

Volume

96

Issue

3

First Page

032301

DOI

10.1103/PhysRevLett.96.032301

Abstract

The PHENIX experiment has measured midrapidity (vertical bar eta vertical bar < 0.35) transverse momentum spectra (0.4 < p(T)< 5.0 GeV/c) of electrons as a function of centrality in Au+Au collisions at root s(NN) = 200 GeV. Contributions from photon conversions and from light hadron decays, mainly Dalitz decays of pi(0) and eta mesons, were removed. The resulting nonphotonic electron spectra are primarily due to the semileptonic decays of hadrons carrying heavy quarks. Nuclear modification factors were determined by comparison to nonphotonic electrons in p+p collisions. A significant suppression of electrons at high p(T) is observed in central Au+Au collisions, indicating substantial energy loss of heavy quarks.

Comments

This article is published as Adler, S. S., S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, J. Alexander, R. Amirikas et al. "Nuclear modification of electron spectra and implications for heavy quark energy loss in Au+ Au collisions at S N N= 200 GeV." Physical Review Letters 96, no. 3 (2006): 032301. DOI:10.1103/PhysRevLett.96.032301. Posted with permission.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

Included in

Nuclear Commons

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