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A viable Le - Lμ model with μ → e violation
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DOI：10.1140/epjc/s10052-023-11469-z.png)
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摘要
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We extend the Standard Model gauge group by U(1)(Le-L mu) and introduce two scalars, a doublet and a singlet, that are charged under this newgroup and have lepton flavour violating couplings. Since in this model mu -> e processes can only be mediated by mu -> tau x tau -> e interactions, bounds from mu -> e transitions can be avoided while allowing for accessible new physics. We consider the case of a Z' boson with a mass of M-Z' similar or equal to 10 GeV and a gauge coupling g' similar or equal to 10(-4), which is in reach of Belle-II, and a long-lived Z' boson withamass of MeV less than or similar to M-Z' less than or similar to m(mu) - m(e) which can be probed by searching for l' -> l' + inv.. Neutrino masses and mixing angles can also be accounted for if sterile neutrinos are added to the spectrum.
Keyword:
FLAVOR VIOLATION
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IF:
4.8
论文数:
1.8W
被引数:
4.7W
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