Dynamical heavy-quark recombination and the nonphotonic single-electron puzzle at energies available at the BNL Relativistic Heavy Ion Collider (RHIC)

作者：Ayala Alejandro^*; Magnin J; Manuel Montano Luis; Toledo Sanchez G

来源：Physical Review C, 2009, 80(6): 064905.

DOI：10.1103/PhysRevC.80.064905

We show that the single, nonphotonic 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 a ratio and show that this produces a sizable suppression factor for R(AA)(e) at intermediate transverse momenta. We argue that this suppression factor needs to be considered, in addition to the energy loss contribution, in calculations of R(AA)(e).

• 出版日期2009-12