Dynamical heavy-quark recombination and the non-photonic single electron puzzle at RHIC

Details Dynamical heavy-quark recombination and the non-photonic single electron puzzle at RHIC Dynamical heavy-quark recombination and the non-photonic single electron puzzle at RHIC

2009-08-03

arxiv.org/abs/0908.0361v1

Phys.Rev.C80:064905,2009

Physics

Nuclear Physics

Nuclear Theory

8 pages, 5 figures

Scientific paper

10.1103/PhysRevC.80.064905

We show that the single, non-photonic electron nuclear modification factor $R_{AA}^e$ is affected by the thermal enhancement of the heavy-baryon to heavy-meson ratio in relativistic heavy-ion collisions with respect to proton-proton collisions. We make use of the dynamical quark recombination model to compute such ratio and show that this produces a sizable suppression factor for $R_{AA}^e$ at intermediate transverse momenta. We argue that such suppression factor needs to be considered, in addition to the energy loss contribution, in calculations of $R_{AA}^e$

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