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Nuclear Modification of Electron Spectra and Implications for Heavy Quark Energy Loss in Au+Au Collisions at sqrt(s_NN)=200 GeV
- Source :
- Physical Review Letters, Physical Review Letters, American Physical Society, 2006, 96, pp.032301. ⟨10.1103/PhysRevLett.96.032301⟩, Physical Review Letters, 2006, 96, pp.032301. ⟨10.1103/PhysRevLett.96.032301⟩
- Publication Year :
- 2005
- Publisher :
- arXiv, 2005.
-
Abstract
- The PHENIX experiment has measured mid-rapidity transverse momentum spectra (0.4 < p_T < 5.0 GeV/c) of electrons as a function of centrality in Au+Au collisions at sqrt(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 non-photonic electron spectra are primarily due to the semi-leptonic decays of hadrons carrying heavy quarks. Nuclear modification factors were determined by comparison to non-photonic 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.<br />330 authors, 6 pages text, 3 figures. Submitted to Phys. Rev. Lett. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html
Details
- ISSN :
- 00319007 and 10797114
- Database :
- OpenAIRE
- Journal :
- Physical Review Letters, Physical Review Letters, American Physical Society, 2006, 96, pp.032301. ⟨10.1103/PhysRevLett.96.032301⟩, Physical Review Letters, 2006, 96, pp.032301. ⟨10.1103/PhysRevLett.96.032301⟩
- Accession number :
- edsair.doi.dedup.....4c892d280dbb5e25dfd935c887b858b3
- Full Text :
- https://doi.org/10.48550/arxiv.nucl-ex/0510047