论文标题
共线性分解框架中的Quarkonia对独家生产
Exclusive production of quarkonia pairs in collinear factorization framework
论文作者
论文摘要
在本文中，我们分析了共线分解框架中重夸克尼亚对的独家光生生产。我们以$ j/ψ\， - η_{c} $ quarkonia对以强耦合$α_{s}，$的领先顺序评估该过程的幅度。我们在电子离子对撞机的运动学中进行了数值估计，发现在光生生成状态下，当光子的虚拟性远小于Quarkonia质量时，该过程的横截面足以实验研究。我们证明，对该渠道的研究可以补充来自其他渠道的GLUON GPD的现有研究。
In this paper we analyze the exclusive photoproduction of heavy quarkonia pairs in the collinear factorization framework. We evaluate the amplitude of the process for $J/ψ\,-η_{c}$ quarkonia pair in the leading order of the strong coupling $α_{s},$ and express it in terms of generalized parton distributions (GPDs) of gluons in the proton. We made numerical estimates in the kinematics of the Electron Ion Collider, and found that in the photoproduction regime, when the virtuality of the photon is much smaller than the quarkonia mass, the cross-section of the process is sufficiently large for experimental studies. We demonstrate that the study of this channel can complement existing studies of gluon GPDs from other channels.
