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language
eng
Author
Mimura, Yukihiro Institute of Science and Engineering, Shimane University, 1060 Nishi-Kawatsu, Matsue City, Shimane, 690-8504, Japan
Description
In the minimal SUSY SU(5) GUT with O(1) TeV SUSY particles and O(1) or below self-coupling for the GUT-breaking Higgs field, the width of the dimension-6 proton decay is suppressed below the reach of Hyper-Kamiokande. In this paper, we point out that a SUSY SO(10) GUT which adopts only 45H+16H+16H GUT-breaking Higgs fields leads to an enhanced dimension-6 proton decay width detectable at Hyper-Kamiokande. The enhancement is because the SU(5)-breaking VEV of 45H arises due to Planck-suppressed terms, W ∝ (45 2H )2/M∗ + 45 4H /M∗, and is therefore substantially larger than the other VEVs that conserve SU(5). As a result, the (3,2, 1/6) GUT gauge boson mass is about 1/5 smaller than the (3,2, −5/6) GUT gauge boson mass and can induce a fast dimension-6 proton decay. Through a numerical analysis on threshold corrections of the GUT gauge bosons and the physical components of the GUT-breaking Higgs fields, we confirm that the dimension-6 proton decay can be within the reach of Hyper-Kamiokande.
Subject
GUT
Supersymmetric Standard Model
Journal Title
Journal of High Energy Physics
Volume
155
ISSN
1126-6708
ISSN(Online)
1029-8479
Published Date
2019-07-26
DOI
Publisher
Springer Nature
NII Type
Journal Article
Format
PDF
Relation
Text Version
出版社版
Gyoseki ID
e37171
OAI-PMH Set
Faculty of Science and Engineering