Seesaw mechanism in the R-parity-violating supersymmetric standard model with the gauged flavor U(1)Xsymmetry

Atsushi Hinata*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We study the seesaw mechanism in the supersymmetric standard model (SSM) with the Z/3 symmetry called matter triality (M3). The Abelian discrete symmetry prohibits the baryon number violation operators at the (non-)renormalizable level, which ensures proton longevity. The cubic coupling by right-handed neutrinos generates the Majorana mass term after the right-handed sneutrinos develop into the vacuum expectation values. Due to the R-parity violation, the active neutrino masses can be generated not only from the mixings with the right-handed neutrinos but also from those with the minimal SSM neutralinos. We propose a model where M3 is embedded in the gauged flavor symmetry. The flavor charges are constrained by the anomaly cancellation conditions and the requirements to realize the fermion masses and mixing angles in the quark and lepton sectors. We analyze the assignments of the flavor charge, and show that the sterile neutrino mass is allowed to be below the soft supersymmetry-breaking scale, which is constrained by the half-lifetime of the neutrinoless double beta decay.

Original languageEnglish
Article number073B03
JournalProgress of Theoretical and Experimental Physics
Volume2022
Issue number7
DOIs
Publication statusPublished - 2022 Jul 1

Keywords

  • B40
  • B54
  • B55
  • B58

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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