Probing $e\mu$ flavor-violating ALP at Belle II
High Energy Physics - Phenomenology
2020-06-19 v2 High Energy Physics - Experiment
Abstract
Recently, it was pointed out that the electron and muon g-2 discrepancies can be explained simultaneously by a flavor-violating axion-like particle (ALP). We show that the parameter regions favored by the muon g-2 are already excluded by the muonium-antimuonium oscillation bound. In contrast, those for the electron g-2 can be consistent with this bound when the ALP is heavier than 1.5 GeV. We propose to search for a signature of the same-sign and same-flavor lepton pairs and the forward-backward muon asymmetry to test the model at the Belle II experiment.
Keywords
Cite
@article{arxiv.2002.05948,
title = {Probing $e\mu$ flavor-violating ALP at Belle II},
author = {Motoi Endo and Syuhei Iguro and Teppei Kitahara},
journal= {arXiv preprint arXiv:2002.05948},
year = {2020}
}
Comments
22 pages, 5 figures, JHEP version