CepGen – A generic central exclusive processes event generator for hadron-hadron collisions

We present an event generator for the simulation of central exclusive processes in hadron-hadron reactions. Among others, it implements the two-photon production of lepton pairs previously introduced in LPAIR. As a proof of principle, we show that the two approaches are numerically consistent. The k_T-factorized description of this process is also handled, along with the two-photon production of a quark, or a W^+- gauge boson pair. This toolbox may be used as a common framework for the definition of many other processes following this approach. Additionally, photoproduction and other photon induced processes are also considered, or being implemented.本研究提出一款用于模拟强子-强子反应中中心排他过程的事件生成器（event generator）。除其他功能外，该工具实现了此前在LPAIR中提出的双光子产生轻子对过程。作为原理验证，我们证明了这两种方法在数值上具有一致性。该工具支持该过程的k_T因子化（k_T-factorized）描述，同时还实现了夸克的双光子产生过程以及W±规范玻色子对的双光子产生过程。该工具包可作为遵循该研究范式的诸多其他相关过程定义的通用框架。此外，光致产生过程及其他光子诱导反应过程也已被纳入支持范围，或正处于开发实现阶段。