论文标题
DILEPTON生产通过$γγ$工艺产生的中心性依赖性来自核中光子的Wigner分布
Centrality dependence of dilepton production via $γγ$ processes from Wigner distributions of photons in nuclei
论文作者
论文摘要
我们提出了一种基于光子的Wigner分布的新方法，如何计算通过光子 - photon Fusion在半个性中（$ b <2r_a $）$ aa $ collisisions创建的二种障碍子的差异分布。形式主义用于计算不同中心性区域的不变质量，Dilepton横向动量和链球界的不同分布。将计算结果与最近的Star，Alice和Atlas实验数据进行了比较。与数据相吻合，没有免费参数，也没有包括其他机制，例如Quark-Gluon等离子体中可能会逆转叶子的其他机制。
We propose a new complete method, based on the Wigner distributions of photons, how to calculate differential distributions of dileptons created via photon-photon fusion in semicentral ($b<2R_A$) $AA$ collisions. The formalism is used to calculate different distributions of invariant mass, dilepton transverse momentum and acoplanarity for different regions of centrality. The results of calculation are compared with recent STAR, ALICE and ATLAS experimental data. Very good agreement with the data is achieved without free parameters and without including additional mechanisms such as a possible rescattering of leptons in the quark-gluon plasma.
