Threshold corrections to dimension-six proton decay operators in non-minimal SUSY SU(5) GUTs

Borut Bajc; Junji Hisano; Takumi Kuwahara; Yuji Omura

doi:10.1016/j.nuclphysb.2016.06.017

Nuclear Physics B (Sep 2016)

Threshold corrections to dimension-six proton decay operators in non-minimal SUSY SU(5) GUTs

Borut Bajc,
Junji Hisano,
Takumi Kuwahara,
Yuji Omura

Affiliations

Borut Bajc: Jožef Stefan Institute, 1000 Ljubljana, Slovenia
Junji Hisano: Kobayashi-Maskawa Institute for the Origin of Particles and the Universe (KMI), Nagoya University, Nagoya 464-8602, Japan
Takumi Kuwahara: Department of Physics, Nagoya University, Nagoya 464-8602, Japan
Yuji Omura: Kobayashi-Maskawa Institute for the Origin of Particles and the Universe (KMI), Nagoya University, Nagoya 464-8602, Japan

DOI: https://doi.org/10.1016/j.nuclphysb.2016.06.017
Journal volume & issue: Vol. 910, no. C
pp. 1 – 22

Abstract

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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.

Published in Nuclear Physics B

ISSN: 0550-3213 (Print); 1873-1562 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics: Nuclear and particle physics. Atomic energy. Radioactivity
Website: http://www.journals.elsevier.com/nuclear-physics-b/

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