arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2602.16029hep-ph
收藏

迈向MiNLO方法在Drell-Yan过程中的NLO电弱修正纳入

Towards the inclusion of NLO EW corrections in the MiNLO method in Drell-Yan processes

INFN, Sezione di Pavia(意大利国家核物理研究所帕维亚分部);Università degli Studi di Milano - Bicocca(米兰比可卡大学);INFN, Sezione di Milano - Bicocca(意大利国家核物理研究所米兰比可卡分部)

Filippo Belloni, Mauro Chiesa, Carlo Oleari, Emanuele Re

AI总结:

本文提出MiNLO方法在Drell-Yan过程中纳入NLO电弱修正的变体,以解决QED发射中的问题,并评估方法的不确定性。

摘要:

本文首次将MiNLO方法应用于计算Drell-Yan过程中中性向量玻色子产生过程的QED NLO修正。我们仅考虑初始态辐射的情况,当Z玻色子衰变成中微子时。我们展示了MiNLO公式中的阿贝尔化过程,并讨论了它对微分截面的影响。然后我们提出MiNLO公式的变体,以克服处理QED发射时出现的一些问题。由于这是一个案例研究,我们使用了自定义的部分子分布函数和较大的电磁耦合常数,以强调与MiNLO公式预期行为的潜在差异。我们量化了所提出方法的不确定性,包括对于物理值的电磁耦合常数。本文的研究是将完整的电弱效应纳入MiNNLOPS框架所必需的第一步。

英文摘要:

In this paper we present the first application of the MiNLO method to the calculation of QED NLO corrections to the production of a neutral vector boson in Drell-Yan processes. We consider only the case of initial-state radiation, when the Z boson decays into neutrinos. We illustrate the abelianization procedure of the MiNLO formulae and discuss the impact that it has on the differential cross section. We then propose a variant of the MiNLO formulae in order to circumvent some of the problems that arise when dealing with QED emissions. Since this is a case study, we use ad-hoc parton distribution functions and a larger value of the electromagnetic coupling constant, in order to emphasize potential discrepancies with respect to the expected behavior of the MiNLO formulae. We quantify the uncertainties connected with the proposed method, also for a the physical value of the electromagnetic coupling. The study presented here is a necessary first step towards incorporating full electroweak effects into the MiNNLOPS framework.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑