https://scholars.lib.ntu.edu.tw/handle/123456789/606735
標題: | Charged lepton flavor violation in light of muon g- 2 | 作者: | WEI-SHU HOU Kumar G. |
公開日期: | 2021 | 卷: | 81 | 期: | 12 | 來源出版物: | European Physical Journal C | 摘要: | The recent confirmation of the muon g- 2 anomaly by the Fermilab g- 2 experiment may harbinger a new era in μ and τ physics. In the context of general two Higgs doublet model, the discrepancy can be explained via one-loop exchange of sub-TeV exotic scalar and pseudoscalars, namely H and A, that have flavor changing neutral couplings ρτμ and ρμτ at ? 20 times the usual tau Yukawa coupling, λτ. Taking ρ??′?λmin(?,?′), we show that the above solution to muon g- 2 then predicts enhanced rates of various charged lepton flavor violating processes, which should be accessible at upcoming experiments. We cover muon related processes such as μ→ eγ, μ→ eee and μN→ eN, and τ decays τ→ μγ and τ→ μμμ. A similar one-loop diagram with ρeτ= ρτe= O(λe) induces μ→ eγ, bringing the rate right into the sensitivity of the MEG?II experiment. The μeγ dipole can be probed further by μ→ 3 e and μN→ eN. With its promised sensitivity range and ability to use different nuclei, the μN→ eN conversion experiments can not only make discovery, but access the extra diagonal quark Yukawa couplings ρqq. For the τ lepton, we find that τ→ μγ would probe ρττ down to λτ or lower, while τ→ 3 μ would probe ρμμ to O(λμ). ? 2021, The Author(s). |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85121716945&doi=10.1140%2fepjc%2fs10052-021-09939-3&partnerID=40&md5=c84ebd8d6fa975251fd768264fe1e31c https://scholars.lib.ntu.edu.tw/handle/123456789/606735 |
ISSN: | 14346044 | DOI: | 10.1140/epjc/s10052-021-09939-3 |
顯示於: | 物理學系 |
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