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arXiv · 0908.0361

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

Alejandro Ayala·J. Magnin·Luis Manuel Montano·G. Toledo Sanchez
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Abstract

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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Alejandro Ayala, J. Magnin, Luis Manuel Montano, G. Toledo Sanchez. 2009-08-03. Dynamical heavy-quark recombination and the non-photonic single electron puzzle at RHIC. https://doi.org/10.1103/physrevc.80.064905

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