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Title: Proton decay prediction from a gauge-Higgs unification scenario in five dimensions

Journal Article · · Physical Review D
 [1];  [2];  [1]
  1. Shimane Univ., Matsue (Japan). Graduate School of Science and Engineering
  2. 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
Citation Metrics:
Cited by: 2 works
Citation information provided by
Web of Science

References (19)

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