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Energy loss of heavy quarks in the isotropic collisional hot QCD medium at a finite chemical potential
The European Physical Journal Plus ( IF 3.4 ) Pub Date : 2021-01-24 , DOI: 10.1140/epjp/s13360-021-01098-4
M. Yousuf Jamal , Bedangadas Mohanty

The present article is the followup of Eur. Phys. J. C 79, 761 (2019), where we studied the energy loss of the heavy quarks traversing through the isotropic collisional hot QCD medium. As the QCD phase diagram at finite baryon density and the moderate temperature is expected to be traced by the upcoming experimental facilities such as Anti-proton and Ion Research (FAIR) and Nuclotron-based Ion Collider fAcility (NICA), the theoretical research needs the inclusion of finite chemical potential to study the hot QCD medium. Therefore, the aim here is to develop a formalism that investigates the collisional energy loss of heavy quarks moving in the hot QCD medium having small but a finite quark chemical potential. The calculation uses the extended effective fugacity quasi-particle model [1,2,3] and the effective kinetic theory with Bhatnagar-Gross-Krook (BGK) collisional kernel. The change in the energy of charm and bottom quarks with respect to their corresponding momenta has been investigated at different values of collisions frequency and chemical potential. We find that the bottom quark loses less energy than the charm quark for a fixed momentum, collisional frequency and chemical potential. The energy loss values are found to decrease with increasing chemical potential.



中文翻译:

在有限化学势下各向同性碰撞热QCD介质中重夸克的能量损失

本文是Eur的跟进。物理 J.C 79,761(2019),我们研究了横穿各向同性碰撞热QCD介质的重夸克的能量损失。由于预计即将到来的实验设施(如反质子和离子研究(FAIR)和基于Nuclotron的离子对撞机(NICA))将追踪在有限重子密度和中等温度下的QCD相图,因此理论研究需要包括有限的化学势来研究热QCD介质。因此,这里的目的是开发一种形式主义,以研究在夸克化学势较小但有限的热QCD介质中移动的重夸克的碰撞能量损失。该计算使用扩展的有效逸度准粒子模型[1,2,3]和带有Bhatnagar-Gross-Krook(BGK)碰撞核的有效动力学理论。在碰撞频率和化学势的不同值下,已经研究了魅力夸克和底部夸克的能量相对于它们相应的动量的变化。我们发现,对于固定的动量,碰撞频率和化学势,底部夸克损失的能量少于魅力夸克。发现能量损失值随着化学势的增加而降低。

更新日期:2021-01-24
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