2018/12/31 by K. S. Babu, Takeshi Fukuyama, Saki Khan +1 · 19 citations
Physics and Astronomy · #Fermion #Grand Unified Theory #Higgs boson #Higgsino #Lepton #Neutrino #Neutrino Physics Research #Particle physics theoretical and experimental studies #Proton decay #Quantum Chromodynamics and Particle Interactions #SO(10) #Supersymmetry #Yukawa potential #hep-ph
paper · pdf · doi:10.1007/jhep06(2019)045
published in Journal of High Energy Physics 2019(6) (Springer Nature) · 38 pages, 4 figures, replacement to match with the published version
openalex created_date 2019/01/11 · openalex publication_date 2019/06/01 · arxiv created 2019/06/18 · arxiv updated 2019/06/19 · openalex updated_date 2026/08/05
A bstract 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 ( M PQ /M GUT ) 2 , which enables all SUSY particles to have masses of order TeV. With TeV scale SUSY spectrum, p→ vK+ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>p</mml:mi> <mml:mo>→</mml:mo> <mml:mover> <mml:mi>v</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> <mml:msup> <mml:mi>K</mml:mi> <mml:mo>+</mml:mo> </mml:msup> </mml:math> 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.