论文标题
从世界数据中提取冷核物质的喷气运输系数
Extracting the jet transport coefficient of cold nuclear matter from world data
论文作者
论文摘要
我们介绍了在高速扩张框架内，介绍了喷气运输系数（$ \ hat Q $）的全球式全球提取。该分析考虑了全世界关于半包含$ e $ - 深度弹性散射（DIS）的横向动量扩展的数据，以及在$ p $ -a碰撞中的Drell-Yan Dilepton和重型Quarkonium生产中，以及该结构的核修饰在DIS中的作用。这项工作的结果为中型运输特性的普遍性和非平凡尺度依赖性提供了第一个定量证据，类似于标准Parton分布函数中编码的核子结构。我们希望可以扩展$ \ hat Q $的质量依赖性，以确切确定Quark Gluon等离子体的基本属性。
We present the first global extraction of the jet transport coefficient ($\hat q$) for cold nuclear matter within the framework of higher-twist expansion. The analysis takes into account the world data on transverse momentum broadening in semi-inclusive $e$-A deep inelastic scattering (DIS) and in Drell-Yan dilepton and heavy quarkonium production in $p$-A collisions, as well as the nuclear modification of the structure functions in DIS. The results of this work provide the first quantitative evidence for the universality and non-trivial scale dependence of the medium transport property, similar to that for nucleon structure as encoded in the standard parton distribution functions. We expect the extracted scale dependence of $\hat q$ for cold nuclear matter can be extended to precisely identify the fundamental property of quark gluon plasma.
