论文标题

使用$ {\ cal kk} $ mc-hh的ifi和isr效果

IFI and ISR Effects for Z/$γ^*$ Drell-Yan Observables using ${\cal KK}$MC-hh

论文作者

Jadach, S., Ward, B. F. L., Yost, S. A., Was, Z. A.

论文摘要

继续研究重量表玻色子生产中多个光子辐射效应的预期大小,并在LHC的精确物理学的背景下腐烂到充电的Lepton对,使用\ kk {MC {MC {MC} -HH 4.22我们考虑ifi和ISR对特定的Z/$ ump drell-drell-drell-drell-drell-drell-yan-yan-yan-yan-yan consectation and coms vy a at aTlas和cms and atlas和cms and atlas和cms。使用此版本的\ kk {mc} -hh,我们具有连贯的独家启动(ceex)electroweak(ew)精确$ {\ cal o}(α^2 l)$校正,并控制了相应的EW初始 - 基础干扰(IFI)效果。具体来说,我们说明了LHC的$ a_ {fb} $和$ a_4 $的剪切之间的相互作用与服务员高级更正的预期响应的大小。我们发现,在初始状态辐射中,每米级的效应是每米级的效应,IFI的分数效应和每米级效应在超过$ {\ cal O}(\ cal o}(α^2 l)$校正中,应考虑每米尔级的EW校正的任何处理。我们的结果适用于当前的LHC实验数据分析。

Continuing with our investigations of the expected sizes of multiple photon radiative effects in heavy gauge boson production with decay to charged lepton pairs in the context of the precision physics of the LHC, using \KK{MC}-hh 4.22 we consider IFI and ISR effects for specific Z/$γ^*$ Drell-Yan observables measured by the ATLAS and CMS Collaborations. With this version of \KK{MC}-hh, we have coherent exclusive exponentiation (CEEX) electroweak (EW) exact ${\cal O}(α^2 L)$ corrections in a hadronic MC and control over the corresponding EW initial-final interference (IFI) effects as well. Specifically, we illustrate the interplay between cuts of the type used in the measurement of $A_{FB}$ and $A_4$ at the LHC and the sizes of the expected responses of the attendant higher order corrections. We find that there are per cent to per mille level effects in the initial-state radiation, fractional per mille level effects in the IFI and per mille level effects in the over-all ${\cal O}(α^2 L)$ corrections that any treatment of EW corrections at the per mille level should consider. Our results are applicable to current LHC experimental data analyses.

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