论文标题
KKMCHH：将CEEX光子ISR与QED校正的Parton淋浴相匹配
KKMChh: matching CEEX photonic ISR to a QED-corrected parton shower
论文作者
论文摘要
KKMCHH适应了Monte Carlo计划KKMC的CEEX（连贯的独家凸起）形式主义，用于Z Boson生产和衰变，以减少强子散射。初始状态和最终状态辐射的振幅级柔软的光子凸起以及初始最终干扰与临时二阶摄取计算相匹配，并且通过DIZET包括对硬过程的二阶计算。 KKMCHH的第一个版本包括使用当前夸克质量计算的完整初始状态辐射。该版本假设具有可忽略的QED污染的理想化的纯QCD PDF。传统的PDF忽略了QED演变，但不一定没有QED在数据中的影响。 QED校正的PDF为精确QED工作提供了更牢固的起点。我们描述了将KKMCHH的初始状态辐射与QED校正的PDF匹配的新程序，并将其与早期方法进行比较。
KKMChh adapts the CEEX (Coherent Exclusive Exponentiation) formalism of the Monte Carlo Program KKMC for Z boson production and decay to hadron scattering. Amplitude-level soft photon exponentiation of initial and final state radiation, together with initial-final interference, is matched to a perturbative calculation to second order next-to-leading logarithm, and electroweak corrections to the hard process are included via DIZET. The first release of KKMChh included complete initial state radiation calculated with current quark masses. This version assumes idealized pure-QCD PDFs with negligible QED contamination. Traditional PDFs neglect QED evolution but are not necessarily free of QED influence in the data. QED-corrected PDFs provide a firmer starting point for precision QED work. We describe a new procedure for matching KKMChh's initial state radiation to a QED-corrected PDF, and compare this to earlier approaches.
