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arXiv · hep-ph/9908451

On SUSY inspired minimal lepton number violation

J. L. Chkareuli·I. G. Gogoladze·M. G. Green·D. E. Hutchcroft·A. B. Kobakhidze
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Abstract

A minimal lepton number violation (LNV) is proposed which could naturally appear in SUSY theories, if Yukawa and LNV couplings had a common origin. According to this idea properly implemented into MSSM with an additional abelian flavor symmetry the prototype LNV appears due to a mixing of leptons with superheavy Higgs doublet mediating Yukawa couplings. As a result, all significant physical manifestations of LNV reduce to those of the effective trilinear couplings $LL\bar{E}$ and $LQ\bar{D}$ aligned, by size and orientation in a flavor space, with the down fermion (charged lepton and down quark) effective Yukawa couplings, while the effective bilinear terms appear generically suppressed relative to an ordinary $μ$-term of MSSM. Detailed phenomenology of the model related to the flavor-changing processes both in quark and lepton sectors, radiatively induced neutrino masses and decays of the LSP is presented. Remarkably, the model can straightforwardly be extended to a Grand Unified framework and an explicit example with SU(7) GUT is thoroughly discussed.

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J. L. Chkareuli, I. G. Gogoladze, M. G. Green, D. E. Hutchcroft, A. B. Kobakhidze. 2000-01-14. On SUSY inspired minimal lepton number violation. https://doi.org/10.1103/physrevd.62.015014

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