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

Abstract

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.

Authors:
 [1];  [2];  [1]; ORCiD logo [1]
  1. Oklahoma State Univ., Stillwater, OK (United States)
  2. Osaka Univ. (Japan)
Publication Date:
Research Org.:
Oklahoma State Univ., Stillwater, OK (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1612382
Grant/Contract Number:  
SC0016013
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2019; Journal Issue: 6; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Physics; GUT, Neutrino Physics; Quark Masses and SM Parameters

Citation Formats

Babu, K. S., Fukuyama, Takeshi, Khan, Saki, and Saad, Shaikh. Peccei-Quinn symmetry and nucleon decay in renormalizable SUSY SO(10). United States: N. p., 2019. Web. doi:10.1007/jhep06(2019)045.
Babu, K. S., Fukuyama, Takeshi, Khan, Saki, & Saad, Shaikh. Peccei-Quinn symmetry and nucleon decay in renormalizable SUSY SO(10). United States. https://doi.org/10.1007/jhep06(2019)045
Babu, K. S., Fukuyama, Takeshi, Khan, Saki, and Saad, Shaikh. Sat . "Peccei-Quinn symmetry and nucleon decay in renormalizable SUSY SO(10)". United States. https://doi.org/10.1007/jhep06(2019)045. https://www.osti.gov/servlets/purl/1612382.
@article{osti_1612382,
title = {Peccei-Quinn symmetry and nucleon decay in renormalizable SUSY SO(10)},
author = {Babu, K. S. and Fukuyama, Takeshi and Khan, Saki and Saad, Shaikh},
abstractNote = {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.},
doi = {10.1007/jhep06(2019)045},
journal = {Journal of High Energy Physics (Online)},
number = 6,
volume = 2019,
place = {United States},
year = {Sat Jun 01 00:00:00 EDT 2019},
month = {Sat Jun 01 00:00:00 EDT 2019}
}

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