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

被引：9

作者：

Ayala, Alejandro ^{[1
,2
]}

Magnin, J. ^{[2
]}

Manuel Montano, Luis ^{[3
]}

Toledo Sanchez, G. ^{[4
]}

机构：

[1] Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Mexico City 04510, DF, Mexico

[2] CBPF, BR-22290180 Rio De Janeiro, Brazil

[3] IPN, Ctr Invest & Estudios Avanzados, Mexico City 07000, DF, Mexico

[4] Univ Nacl Autonoma Mexico, Inst Fis, Mexico City 01000, DF, Mexico

来源：

PHYSICAL REVIEW C | 2009年 / 80卷 / 06期

关键词：

AU+AU COLLISIONS; SPECTRA; QCD;

D O I：

10.1103/PhysRevC.80.064905

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

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).

引用

页数：7

共 39 条

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