Threshold corrections to dimension-six proton decay operators in non-minimal SUSY SU(5) GUTs
Abstract
We calculate the high and low scale threshold corrections to the D = 6 proton decay mode in supersymmetric SU (5) grand unified theories with higher-dimensional representation Higgs multiplets. In particular, we focus on a missing-partner model in which the grand unified group is spontaneously broken by the 75-dimensional Higgs multiplet and the doublet-triplet splitting problem is solved. We find that in the missing-partner model the D = 6 proton decay rate gets suppressed by about 60%, mainly due to the threshold effect at the GUT scale, while the SUSY-scale threshold corrections are found to be less prominent when sfermions are heavy.
- Publication:
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Nuclear Physics B
- Pub Date:
- September 2016
- DOI:
- 10.1016/j.nuclphysb.2016.06.017
- arXiv:
- arXiv:1603.03568
- Bibcode:
- 2016NuPhB.910....1B
- Keywords:
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- High Energy Physics - Phenomenology
- E-Print:
- 26 pages, 3 figures. Version accepted for publication in Nuclear Physics B (typos and numerical errors are corrected, and texts are added)