Observable proton decay in flipped SU(5)

Mehmood, Maria; Rehman, Mansoor Ur; Shafi, Qaisar

doi:10.1007/jhep02(2021)181

Title: Observable proton decay in flipped SU(5)

Journal Article · Mon Feb 22 00:00:00 EST 2021 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/jhep02(2021)181· OSTI ID:1851848

Mehmood, Maria ^[1]; Rehman, Mansoor Ur ^[1]; Shafi, Qaisar ^[2]

Quaid-i-Azam Univ., Islamabad (Pakistan)
Univ. of Delaware, Newark, DE (United States)

We explore proton decay in a class of realistic supersymmetric flipped SU(5) models supplemented by a U(1)_R symmetry which plays an essential role in implementing hybrid inflation. Two distinct neutrino mass models, based on inverse seesaw and type I seesaw, are identified, with the latter arising from the breaking of U(1)_R by nonrenormalizable superpotential terms. Depending on the neutrino mass model an appropriate set of intermediate scale color triplets from the Higgs superfields play a key role in proton decay channels that include p → (e⁺, μ⁺) π⁰, p → (e⁺, μ⁺) K⁰, p → $$\bar v$$π⁺, and p → $$\bar v$$K⁺. We identify regions of the parameter space that yield proton lifetime estimates which are testable at Hyper-Kamiokande and other next generation experiments. We discuss how gauge coupling unification in the presence of intermediate scale particles is realized, and a Z₄ symmetry is utilized to show how such intermediate scales can arise in flipped SU(5). Finally, we compare our predictions for proton decay with previous work based on SU(5) and flipped SU(5).

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Research Organization:: Univ. of Delaware, Newark, DE (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: SC0013880

OSTI ID:: 1851848

Alternate ID(s):: OSTI ID: 1998076

Journal Information:: Journal of High Energy Physics (Online), Vol. 2021, Issue 2; ISSN 1029-8479

Publisher:: Springer NatureCopyright Statement

Country of Publication:: United States

Language:: English

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Title: Observable proton decay in flipped SU(5)

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