Article
Nuclear modification of electron spectra and implications for heavy quark energy loss in Au + Au collisions at root s(NN)=200 GeV
Physical Review Letters
Document Type
Article
Publication Version
Published Version
Publication Date
1-1-2006
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.
Copyright Owner
American Physical Society
Copyright Date
2006
Language
en
File Format
application/pdf
Citation Information
S. S. Adler, Sergey Belikov, S. Bhagavatula, Paul Constantin, et al.. "Nuclear modification of electron spectra and implications for heavy quark energy loss in Au + Au collisions at root s(NN)=200 GeV" Physical Review Letters Vol. 96 Iss. 3 (2006) p. 032301 Available at: http://works.bepress.com/craig-ogilvie/199/
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.