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Title: Peccei-Quinn symmetry and nucleon decay in renormalizable SUSY SO(10)

Journal Article · · Journal of High Energy Physics (Online)

We suggest simple ways of implementing Peccei-Quinn (PQ) symmetry to solve the strong CP problem in renormalizable SUSY SO(10) models with a minimal Yukawa sector. Realistic fermion mass generation requires that a second pair of Higgs doublets survive down to the PQ scale. We show how unification of gauge couplings can be achieved in this context. Higgsino mediated proton decay rate is strongly suppressed by a factor of (MPQ/MGUT)2, which enables all SUSY particles to have masses of order TeV. With TeV scale SUSY spectrum, $$p → \bar{ν}K^+$$ decay rate is expected to be in the observable range. Lepton flavor violating processes µ → eγ decay and µ - e conversion in nuclei, induced by the Dirac neutrino Yukawa couplings, are found to be within reach of forthcoming experiments.

Research Organization:
Oklahoma State Univ., Stillwater, OK (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
SC0016013
OSTI ID:
1612382
Journal Information:
Journal of High Energy Physics (Online), Vol. 2019, Issue 6; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English

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