Proton decay prediction from a gauge-Higgs unification scenario in five dimensions
- Shimane Univ., Matsue (Japan). Graduate School of Science and Engineering
- Univ. of Alabama, Tuscaloosa, AL (United States). Dept. of Physics and Astronomy
The Higgs boson mass and top quark mass imply that the Higgs quartic coupling vanishes around the scale of 109-1013 GeV, depending on the precise value of the top quark mass. The vanishing quartic coupling can be naturally addressed if the Higgs field originates from a 5-dimensional gauge field and the 5th dimension is compactified at the scale of the vanishing Higgs quartic coupling, which is a scenario based on gauge-Higgs unification. We present a general prediction of the scenario on the proton decay process p→π0e+. In many gauge-Higgs unification models, the 1st generation fermions are localized towards an orbifold fixed point in order to realize the realistic Yukawa couplings. Hence, four-fermion operators responsible for the proton decay can appear with a suppression of the 5-dimensional Planck scale (not the 4-dimensional Planck scale). Since the 5-dimensional Planck scale is connected to the compactification scale, we have a correlation between the proton partial decay width and the top quark mass. We show that the future Hyper-Kamiokande experiment may discover the proton decay if the top quark pole mass is larger than about 172.5 GeV.
- Research Organization:
- Univ. of Alabama, Tuscaloosa, AL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Grant/Contract Number:
- SC0013680; 24540272; 26247038; 15H01037; 16H00871; 16H02189
- OSTI ID:
- 1365632
- Alternate ID(s):
- OSTI ID: 1328585
- Journal Information:
- Physical Review D, Vol. 94, Issue 7; ISSN 2470-0010
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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