Transverse momentum and centrality dependence of high-p{sub T} nonphotonic electron suppression in Au+Au collisions at {radical}{ovr s}{sub NN} = 200 GeV.

Journal Article · Mon Jan 01 00:00:00 EST 2007 · Phys. Rev. Lett.

DOI:https://doi.org/10.1103/PhysRevLett.98.192301· OSTI ID:964643

Krueger, K; McClain, C J; Spinka, H M; Underwood, D G; Abelev, B I; Aggarwal, M M; Ahammed, Z; Anderson, B D; Arkhipkin, D

The STAR collaboration at the BNL Relativistic Heavy-Ion Collider (RHIC) reports measurements of the inclusive yield of nonphotonic electrons, which arise dominantly from semileptonic decays of heavy flavor mesons, over a broad range of transverse momenta (1.2 < p{sub T} < 10 GeV/c) in p+p, d+Au, and Au+Au collisions at {radical}s{sub NN} = 200 GeV. The nonphotonic electron yield exhibits an unexpectedly large suppression in central Au+Au collisions at high p{sub T}, suggesting substantial heavy-quark energy loss at RHIC. The centrality and p{sub T} dependences of the suppression provide constraints on theoretical models of suppression.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC); National Science Foundation (NSF); Swiss NSF
• DOE Contract Number: DE-AC02-06CH11357
• OSTI ID: 964643
• Report Number(s): ANL-HEP-PR-09-56; PRLTAO; TRN: US0903606
• Journal Information: Phys. Rev. Lett., Vol. 98, Issue 2007; ISSN 0031-9007
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BNL
ELECTRONS
MESONS
SEMILEPTONIC DECAY
TRANSVERSE MOMENTUM