重夸克在稠密物质中的多重散射和阻力的参量突出
Multiple scattering of heavy-quarks in dense matter and the parametric prominence of drag
摘要：
在高扭曲能量损失方案的多重散射形式下，研究了重夸克在稠密扩展物质中的传播。我们考虑了大原子核的深度非弹性散射。硬轻子散射了一个核子内的重夸克涨落。然后这个重夸克在稠密介质中传播，在其路径上被剩余核子的胶子场多次散射。我们考虑一个虚构的过程，其中一个重夸克在没有辐射的情况下通过核传播。排除软共线有效理论的功率计数参数，我们考虑的情况下，一个“半硬”重夸克的质量是的顺序的外向动量和大于横向动量赋予每单位长度由于散射。在这个极限下，发现纵向动量交换（用输运系数$\hat{e}$量化）对传播夸克的离壳性有着与横向动量交换（用$\hat{q}$量化）相当的影响，横向动量交换是传播轻夸克或胶子离壳性的主要原因。这个新的层次的重夸克在稠密物质中的传播的后果进行了讨论。
英文摘要：
The case of heavy quark propagation in dense extended matter is studied in the multiple scattering formalism of the higher twist energy loss scheme. We consider the case of deep inelastic scattering off a large nucleus. The hard lepton scatters off a heavy quark fluctuation within one of the nucleons. This heavy quark then propagates through the dense medium, multiply scattering off the gluon field of the remaining nucleons in its path. We consider the fictitious process where a heavy quark propagates through the nucleus without radiation. Invoking Soft-Collinear Effective Theory power counting arguments, we consider the case of a "semi-hard" heavy-quark where the mass is of the order of the out-going momentum and larger than the transverse momentum imparted per unit length due to scattering. In this limit, it is found that longitudinal momentum exchanges (quantified by the transport coefficient $\hat{e}$) have a comparable effect on the off-shellness of the propagating quark, as the transverse momentum exchanges (quantified by $\hat{q}$) which constitute the leading cause of off-shellness for propagating light quarks or gluons. Consequences of this new hierarchy for the propagation of the heavy quark in dense matter are discussed.
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。
