AI 中文总结
该研究在Sherpa事件生成器中构建自动框架，基于等效光子近似模拟质子与原子核高能碰撞的光子诱导过程，考虑发射体尺寸及碰撞参数依赖性，通过特定方法自动考虑高阶效应，经实验数据验证并给出相关示例预测。
AI 中文摘要
我们在Sherpa事件生成器中提出了一个自动框架，用于模拟质子与原子核高能碰撞中的光子诱导过程。该计算基于等效光子近似，并纳入了不同的形状因子参数化，考虑了对发射体有限尺寸及其碰撞参数的完全依赖性。通过对软光子发射进行到所有阶的YFS重整化或电弱理论中的次领头阶自动考虑高阶效应。我们使用来自ATLAS对pp和Pb+Pb碰撞中排他性μ子对产生的两次代表性测量数据验证了我们的模拟框架。还给出了pp碰撞中排他性W对产生以及pp和Pb+Pb碰撞中τ对产生的示例预测。
英文摘要
We present an automated framework within the Sherpa event generator for the simulation of photon-induced processes in high-energy collisions of protons and nuclei. The calculation builds upon the equivalent-photon approximation and incorporates different form factor parametrisations, taking into account the full dependence on the finite size of emitters and their impact parameter. Higher-order effects are taken into account automatically by either YFS-resummation of soft photon emissions to all orders or Next-to-Leading Order in electroweak theory. We validate our simulation framework using data from two representative ATLAS measurements of exclusive $μ$-pair production in $pp$ and Pb+Pb collisions. Exemplary predictions for exclusive $W$-pair production in $pp$ collisions and $τ$-pair production in both $pp$ and Pb+Pb collisions are presented.
Comments18 pages, 9 figures, 3 tables
