Influence of Bottom Quark Jet Quenching on Single ElectronTomography of Au+Au
High transverse momentum single (non-photonic) electrons are shown to be sensitive to the stopping power of both bottom, b, and charm, c, quarks in AA collisions. We apply the DGLV theory of radiative energy loss to predict c and b quark jet quenching and compare the FONLL and PYTHIA heavy flavor fragmentation and decay schemes. We show that single electrons in the p{sub T} = 5-10 GeV range are dominated by the decay of b quarks rather than the more strongly quenched c quarks in Au+Au collisions at {radical}s = 200 AGeV. The smaller b quark energy loss, even for extreme opacities with gluon rapidity densities up to 3500, is predicted to limit the nuclear modification factor, R{sub AA}, of single electrons to the range R{sub AA} {approx} 0.5-0.6, in contrast to previous predictions of R{sub AA} {le} 0.2-0.3 based on taking only c quark jet fragmentation into account.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director. Office of Science. Office of NuclearPhysics
- DOE Contract Number:
- DE-AC02-05CH11231
- OSTI ID:
- 882081
- Report Number(s):
- LBNL-58154; R&D Project: NTCOST; BnR: KB0301020; TRN: US0603183
- Journal Information:
- Physical Letters B, Vol. 632, Issue 1; Related Information: Journal Publication Date: 01/05/2006
- Country of Publication:
- United States
- Language:
- English
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