发表机构
University of Bonn; Deutsches Elektronen-Synchrotron DESY（波恩大学; 德国电子同步加速器）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究评估单衍射W/Z产生对LHC精密测量的影响，发现对α_s和W质量的偏移低于拟合精度，无显著现象学影响。
AI 中文摘要
大型强子对撞机测量精度的不断提高要求对电弱玻色子产生的所有贡献进行详细理解。我们估算了单衍射W和Z产生在$\u221as=5$、7、8和13 TeV下对精密观测量的影响。非衍射基线使用DYTurbo计算，而Herwig提供相对单衍射贡献及其横动量依赖性。通过Pythia8的动态多部分子相互作用模型计算的依赖于$p_T$的快度间隙存活概率来纳入因子化破坏。衍射Asimov谱通过对用于非衍射基线的同一高数值精度DYTurbo截面进行确定性逐箱重新加权构建。在非微扰参数被剖面化后，$\u03b1_s$的名义相对偏移在5、7、8和13 TeV下分别为-0.0072%、-0.043%、-0.070%和-0.067%。五种Pythia8 Pomeron通量和衍射PDF配置在$\u0394\u03b1_s$中给出最大散布为$9.4\u00d710^{-6}$。在W质量研究中，未建模的存活单衍射贡献引起的最大偏差为1.58 MeV，应用相应模型匹配模板校正后的最大残差为1.14 MeV。这些偏移低于相关拟合精度，在测试的模型内预计对$m_W$没有现象学上的显著影响。
英文摘要
The increasing precision of measurements at the Large Hadron Collider requires a detailed understanding of all contributions to electroweak boson production. We estimate the impact of single-diffractive W and Z production on precision observables at $\sqrt{s}=5$, 7, 8, and 13 TeV. The non-diffractive baseline is calculated with DYTurbo, while Herwig provides the relative single-diffractive contribution and its transverse-momentum dependence. Factorization breaking is incorporated through a $p_T$-dependent rapidity-gap survival probability calculated with the dynamic multiparton-interaction model of Pythia8. The diffractive Asimov spectrum is constructed by deterministic bin-by-bin reweighting of the same high-numerical-precision DYTurbo cross section used for the non-diffractive baseline. With the non-perturbative parameters profiled, the nominal relative shifts in $α_s$ are -0.0072%, -0.043%, -0.070%, and -0.067% at 5, 7, 8, and 13 TeV, respectively. Five Pythia8 Pomeron-flux and diffractive-PDF configurations give a maximum spread of $9.4\times10^{-6}$ in $Δα_s$. In the W-mass study, the largest bias from an unmodelled survived single-diffractive contribution is 1.58 MeV, and the largest residual after applying the corresponding model-matched template correction is 1.14 MeV. These shifts are below the relevant fit precision, and no phenomenologically significant impact on $m_W$ is expected within the tested models.
