论文标题
Lepton-Pair生产中的硬龙 - 施强子碰撞
Lepton-pair production in hard exclusive hadron-hadron collisions
论文作者
论文摘要
我们调查了硬体黑德隆碰撞中的Lepton Pair生产。 我们考虑了一种双手提包（DH）机制，其中该过程振幅将硬子过程分配为QQ-> QQ gamma*和QG-> QG-> QG伽马*，以及在软黑体矩阵元件中以参数为广义的Parton分布（GPDS）。采用从独家介子电源中提取的GPD，我们提出了LHC，NICA和FAIR的典型运动学的Lepton Pair横截面的预测。事实证明，我们的数值研究是，夸克 - 格鲁恩子进程占据了统治，到目前为止，夸克夸克（Antiquark）子过程几乎可以忽略不计。
We investigate lepton-pair production in hard exclusive hadron-hadron collisions. We consider a double handbag (DH) mechanism in which the process amplitude factorizes in hard subprocesses, qq -> qq gamma* and qg -> qg gamma*, and in soft hadron matrix elements parameterized as generalized parton distributions (GPDs). Employing GPDs extracted from exclusive meson electroproduction, we present predictions for the lepton-pair cross section at kinematics typical for the LHC, NICA and FAIR. It turns out from our numerical studies that the quark-gluon subprocess dominates by far, the quark-quark (antiquark) subprocesses are almost negligible.
