We present the results of the new SuperChic 4 Monte Carlo implementation of photon-initiated production in proton–proton collisions, considering as a first example the case of lepton pair production. This is based on the structure function calculation of the underlying process, and focusses on a complete account of the various contributing channels, including the case where a rapidity gap veto is imposed. We provide a careful treatment of the contributions where either (single dissociation), both (double dissociation) or neither (elastic) proton interacts inelastically and dissociates, and interface our results to Pythia for showering and hadronization. The particle decay distribution from dissociation system, as well the survival probability for no additional proton–proton interactions, are both fully accounted for; these are essential for comparing to data where a rapidity gap veto is applied. We present detailed results for the impact of the veto requirement on the differential cross section, compare to and find good agreement with ATLAS 7 TeV data on semi-exclusive production, and provide a new precise evaluation of the background from semi-exclusive lepton pair production to SUSY particle production in compressed mass scenarios, which is found to be low.

我们以质子-质子碰撞的光子对产生为例，介绍了新的SuperChic 4 Monte Carlo实施的光子引发质子-质子碰撞的结果。这基于基础过程的结构函数计算，并集中于各种贡献渠道的完整说明，包括强加快速差距否决权的情况。我们会仔细评估贡献（单解离），（双解离）或（弹性）质子都不会发生非弹性相互作用和解离的贡献，并将我们的结果与Pythia联系起来用于淋浴和强子化。离解系统的粒子衰减分布，以及没有其他质子-质子相互作用的存活概率，都得到了充分考虑。对于与使用快速度否决权的数据进行比较，这些是必不可少的。我们提供了否决要求对差分横截面的影响的详细结果，与半独家生产的ATLAS 7 TeV数据进行比较并找到了很好的一致性，并提供了对半独家轻子对生产背景的新精确评估被压缩的情况下对SUSY粒子的产生非常低。