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Title: Yukawa sector of minimal SO(10) unification

Here, we show that in SO(10) models, a Yukawa sector consisting of a real 10H, a real 120H and a complex 126 H of Higgs fields can provide a realistic fit to all fermion masses and mixings, including the neutrino sector. Although the group theory of SO(10) demands that the 10 H and 120 H be real, most constructions complexify these fields and impose symmetries exterior to SO(10) to achieve predictivity. The proposed new framework with real 10H and real 120 H relies only on SO(10) gauge symmetry, and yet has a limited number of Yukawa parameters. Our analysis shows that while there are restrictions on the observables, a good fit to the entire fermion spectrum can be realized. Unification of gauge couplings is achieved with an intermediate scale Pati-Salam gauge symmetry. Proton decay branching ratios are calculable, with the leading decay modes being p→ $$\bar{v}$$π + and p→ e + π 0.
 [1] ;  [2] ; ORCiD logo [1]
  1. Oklahoma State Univ., Stillwater, OK (United States)
  2. Jozef Stefan Inst. (IJS), Ljubljana (Slovenia)
Publication Date:
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2017; Journal Issue: 2; Journal ID: ISSN 1029-8479
Springer Berlin
Research Org:
Oklahoma State Univ., Stillwater, OK (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; grand unified theories; intermediate mass scales; neutrino masses; fermion masses; renormalization-group; split supersymmetry; parity restoration; lepton number; CP-violation; low energies; Beyond Standard Model; GUT; Neutrino Physics; Quark Masses and SM Parameters
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1358355