论文标题

对MUON异常磁矩的新物理学解释的敏感性

MUonE sensitivity to new physics explanations of the muon anomalous magnetic moment

论文作者

Dev, P. S. Bhupal, Rodejohann, Werner, Xu, Xun-Jie, Zhang, Yongchao

论文摘要

MUONE实验的目的是通过弹性Muon-Electron散射对MUON $ G-2 $的HADRONIC真空极化贡献进行精确测量。由于当前的MUON $ G-2 $异常暗示了与MUON有关的新物理学(NP)的潜在存在,因此,关于MUONE的HADRONIC真空极化的测量是否会受到相同NP的影响。在这项工作中,我们通过调查了MUON $ G-2 $异常的各种NP解释,通过矢量或标量介质,具有味道 - 普遍,非普遍,非全金,甚至是风味的侵略耦合耦合。在每种情况下,我们都会得出相应的Muone敏感性,并发现Muone的Hadronic真空极化的测量不容易受到这些NP场景的影响。

The MUonE experiment aims at a precision measurement of the hadronic vacuum polarization contribution to the muon $g-2$, via elastic muon-electron scattering. Since the current muon $g-2$ anomaly hints at the potential existence of new physics (NP) related to the muon, the question then arises as to whether the measurement of hadronic vacuum polarization in MUonE could be affected by the same NP as well. In this work, we address this question by investigating a variety of NP explanations of the muon $g-2$ anomaly via either vector or scalar mediators with either flavor-universal, non-universal or even flavor-violating couplings to electrons and muons. We derive the corresponding MUonE sensitivity in each case and find that the measurement of hadronic vacuum polarization at the MUonE is not vulnerable to any of these NP scenarios.

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