arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2501.01600hep-phnucl-th
收藏

中等动量下重夸克抑制与各向异性流

Heavy quark suppression and anisotropic flow at intermediate momentum

Juhee Hong

AI总结:

该研究在中等动量下计算重夸克抑制与各向异性流,通过统一碰撞和辐射能量损失的玻尔兹曼方程,揭示质量效应显著的过渡机制。

摘要:

在质量效应显著的中等动量区间,计算了重夸克抑制和各向异性流,以研究碰撞能量损失与辐射能量损失之间的过渡。基于扩散的碰撞核,弹性散射和半共线胶子轫致辐射可以一致地纳入涉及重夸克扩散系数的玻尔兹曼方程中。利用跑动耦合常数和由格点QCD数据约束的扩散系数,在流体动力学膨胀的热介质中研究了碰撞和辐射能量损失对$R_{AA}$和$v_2$的贡献。在非中心重离子碰撞中,讨论了观测量随时间的演化、体流效应以及质量和中心度的依赖性。

英文摘要:

In an intermediate-momentum regime where mass effects are significant, heavy quark suppression and anisotropic flow are computed to investigate the transition between the collisional and radiative energy loss. Based on the collision kernel for diffusion, elastic scattering and semi-collinear gluon-bremsstrahlung can be consistently incorporated into a Boltzmann equation that involves the heavy quark diffusion coefficient. Using the running coupling constant and the diffusion coefficient constrained by lattice QCD data, the collisional and radiative energy-loss contributions to the $R_{AA}$ and $v_2$ are studied in hydrodynamically expanding thermal media. The evolution of the observables, the bulk flow effect, and the dependence on mass and centrality are discussed in noncentral heavy-ion collisions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑