Lepton flavor violations in SUSY models for muon g − 2 with right-handed neutrinos

Ryo Nagai (Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Via Marzolo 8, Padova, 35131, Italy; Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Padova, Via Marzolo 8, Padova, 35131, Italy) ; Norimi Yokozaki (KEK Theory Center, IPNS, KEK, Tsukuba, Ibaraki, 305-0801, Japan)

We consider supersymmetric (SUSY) models for the muon g − 2 anomaly without flavor violating masses at the tree-level. The models can avoid LHC constraints and the vacuum stability constraint in the stau-Higgs potential. Although large flavor violating processes are not induced within the framework of minimal SUSY standard model, once we adopt a seesaw model, sizable lepton flavor violating (LFV) processes such as μ → eγ and μ → e conversion are induced. These LFV processes will be observed at future experiments such as MEG-II, COMET and Mu2e if right-handed neutrinos are heavier than 109 GeV motivated by the successful leptogenesis. This conclusion is somewhat model independent since Higgs doublets are required to have large soft SUSY breaking masses, leading to flavor violations in a slepton sector via neutrino Yukawa interactions.

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Published on:
18 January 2021
Publisher:
Springer
Published in:
Journal of High Energy Physics , Volume 2021 (2021)
Issue 1
Pages 1-24
DOI:
https://doi.org/10.1007/JHEP01(2021)099
arXiv:
2007.00943
Copyrights:
The Author(s)
Licence:
CC-BY-4.0

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