Leptophilic U(1) massive vector bosons from large extra dimensions
Leptophilic U(1) massive vector bosons from large extra dimensions
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DOI：
10.1016/j.physletb.2021.136585
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发表时间：
2021-08-23
影响因子：
4.4
通讯作者：
Taylor, Tomasz R.
中科院分区：
文献类型：
--
作者：
Anchordoqui, Luis A.;Antoniadis, Ignatios;Taylor, Tomasz R.
我们证明了在BNL和Fermilab测量的异常磁矩与标准模型预测之间的差异可以在低尺度重力和大额外维度的背景下解释。（g - 2）（mu）的主要贡献来自（轻子规范玻色子的）Kaluza-Klein （KK）激发，它不与夸克混合（最低阶），因此可以相当轻，避免了LHC的限制。我们证明了KK对（g - 2）（mu）的贡献是普遍的，弦尺度作为有效的截止点进入。KK塔提供了一个明确的独特信号，它将在未来的μ子撞击器的范围内。(C) 2021作者。Elsevier B.V.出版
We demonstrate that the discrepancy between the anomalous magnetic moment measured at BNL and Fermilab and the Standard Model prediction could be explained within the context of low-scale gravity and large extra-dimensions. The dominant contribution to (g - 2)(mu) originates in Kaluza-Klein (KK) excitations (of the lepton gauge boson) which do not mix with quarks (to lowest order) and therefore can be quite light avoiding LHC constraints. We show that the KK contribution to (g - 2)(mu) is universal with the string scale entering as an effective cutoff. The KK tower provides a unequivocal distinctive signal which will be within reach of the future muon smasher. (C) 2021 The Author(s). Published by Elsevier B.V.