发表机构
Institute for Theoretical Physics, University of Regensburg; Department of Physics and Astronomy, University of Kentucky; Nuclear Science Division, Lawrence Berkeley National Laboratory（雷根斯堡大学理论物理研究所; 肯塔基大学物理与天文系; 劳伦斯伯克利国家实验室核科学部）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
为助力HL-LHC的BSM物理搜索，该研究采用CLS合作组的Wilson-Clover费米子规范系综，探究核子双部分子分布的格点参数依赖性，包括有限体积、格点间距及质量参数的影响。
AI 中文摘要
为充分利用高亮度大型强子对撞机（HL-LHC），尤其是在寻找超出标准模型（BSM）物理时，必须以更高精度理解所有标准模型背景。这对于双部分子相互作用（DPIs）以及更广泛的多部分子相互作用（MPIs）尤为困难，因为它们在实验中很难精确分离。DPIs由双部分子分布（DPDs）参数化，因此格点方法确定DPDs极具吸引力。在我们之前关于格点DPDs的工作中，我们聚焦于一个具有高于物理π介子质量的规范系综得到的结果。在本研究中，我们扩展了工作，研究有限体积引入的人工效应及对格点间距的依赖性，此外还考虑了对质量参数的依赖性。本研究采用CLS合作组生成的Wilson-Clover费米子规范系综开展。
英文摘要
To make full use of the HL-LHC, especially in the search for BSM physics, all Standard Model backgrounds have to be understood with increased precision. This is especially difficult for Double Parton Interactions (DPIs) and more generally Multi Parton Interactions (MPIs), which are very difficult to isolate precisely in experiment. DPIs are parameterized by Double Parton Distributions (DPDs) and the lattice determination of the latter is, therefore, especially attractive. In our previous work on DPDs on the lattice, we focused on the results obtained from one gauge ensemble with higher than physical pion mass. In this work, we extend our efforts by investigating artifacts introduced by finite volume and the dependence on the lattice spacing. Moreover, we consider the dependence on the mass parameters. This study is carried out by employing the Wilson-Clover fermion gauge ensembles generated by the CLS collaboration.
