arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2409.20131hep-ph
收藏

轻子对撞机中的次领头希格斯效应

Subleading Higgs effects at lepton colliders

Axel Maas, Duifje M. van Egmond, Simon Plätzer

AI总结:

本文利用增广微扰论研究轻子对撞机中额外希格斯贡献的次领头阶效应,发现完全遍举费米子-反费米子过程中偏差仅在电弱NNLO固定阶出现,但在TeV能标重求和树图阶已显著,并讨论了其他过程。

摘要:

微妙的场论效应表明,标准模型过程中存在额外的希格斯贡献。这一点已得到电弱格点计算的支持,例如矢量玻色子散射。这些效应可以通过适当的增广方法纳入微扰论。我们利用这种增广微扰论来确定从 LEP 到 FCC 等未来机器在内的轻子对撞机上,在费米子-反费米子末态碰撞中次领头阶的影响。在给出形式化背景之后,我们概述了计算步骤,表明在完全遍举过程 $e^-e^+\ o f\ar{f}$ 中,偏差仅在电弱 NNLO 的固定阶出现,但在 TeV 能标下,在重求和树图阶计算中就已变得重要。我们进一步讨论了预期在固定阶 NLO 就已出现偏差的其他过程。

英文摘要:

Subtle field-theoretical effects suggest the presence of additional Higgs contributions in standard model processes. This has been supported by electroweak lattice calculation, e.\ g.\ for vector boson scattering. These effects can be included in perturbation theory by a suitable augmentation. We use such augmented perturbation theory to determine the impact at next-to-leading order at lepton colliders, from LEP to future machines such as FCC, in collisions with fermion-antifermion final states. After providing the formal background, we outline the calculational procedure, showing that in the fully exclusive process $e^-e^+\to f\bar{f}$ deviations only occur in fixed order at electroweak NNLO, but become relevant at the TeV scale already in resummed tree-level calculations. We discuss further processes where deviations are expected already at fixed-order NLO.

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。

↑