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arXiv 2104.03249hep-phhep-exhep-th
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μ子反常磁矩的一个假二重态解

A fake doublet solution to the muon anomalous magnetic moment

Damiano Anselmi, Kristjan Kannike, Carlo Marzo, Luca Marzola, Aurora Melis, Kristjan Müürsepp, Marco Piva, Martti Raidal

摘要:

对标准模型的扩展使用了严格的离壳自由度--假子--允许在能量尺度上产生新的可测量的相互作用,这些能量尺度通常被针对新粒子在壳层上传播的约束所排除。在这里,我们采用一个新的假标量偶和μ子之间的相互作用来解释最近费米实验室测量其异常磁矩。值得注意的是,与通常粒子的情况不同,实验结果可以在电弱标度以下的假子质量上匹配,而不会与严格的精确数据和对撞机对新光自由度的限制相矛盾。因此,我们的分析表明,fakeon方法提供了意想不到的可行的可能性,自然地在低尺度下模拟新的物理。

英文摘要:

Extensions to the Standard Model that use strictly off-shell degrees of freedom - the fakeons - allow for new measurable interactions at energy scales usually precluded by the constraints that target the on-shell propagation of new particles. Here we employ the interactions between a new fake scalar doublet and the muon to explain the recent Fermilab measurement of its anomalous magnetic moment. Remarkably, unlike in the case of usual particles, the experimental result can be matched for fakeon masses below the electroweak scale without contradicting the stringent precision data and collider bounds on new light degrees of freedom. Our analysis, therefore, demonstrates that the fakeon approach offers unexpected viable possibilities to model new physics naturally at low scales.

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。

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