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Title: Gravity waves and proton decay in a flipped SU(5) hybrid inflation model

Abstract

We revisit supersymmetric hybrid inflation in the context of the flipped SU(5) model. With minimal superpotential and minimal Kähler potential, and soft supersymmetry (SUSY) masses of order (1–100) TeV, compatibility with the Planck data yields a symmetry breaking scale M of flipped SU(5) close to (2–4) × 10 15 GeV. This disagrees with the lower limit M ≳ 7 × 10 15 GeV set from proton decay searches by the Super-Kamiokande collaboration. We show how M close to the unification scale 2 × 10 16 GeV can be reconciled with SUSY hybrid inflation by employing a nonminimal Kähler potential. Proton decays into e +π 0 with an estimated lifetime of order 10 36 years. The tensor to scalar ratio r in this case can approach observable values ~10 -4–10 -3.

Authors:
; ;
Publication Date:
Research Org.:
Univ. of Delaware, Newark, DE (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1454318
Alternate Identifier(s):
OSTI ID: 1503866
Grant/Contract Number:  
SC0013880
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 97 Journal Issue: 12; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS

Citation Formats

Rehman, Mansoor Ur, Shafi, Qaisar, and Zubair, Umer. Gravity waves and proton decay in a flipped SU(5) hybrid inflation model. United States: N. p., 2018. Web. doi:10.1103/PhysRevD.97.123522.
Rehman, Mansoor Ur, Shafi, Qaisar, & Zubair, Umer. Gravity waves and proton decay in a flipped SU(5) hybrid inflation model. United States. doi:10.1103/PhysRevD.97.123522.
Rehman, Mansoor Ur, Shafi, Qaisar, and Zubair, Umer. Thu . "Gravity waves and proton decay in a flipped SU(5) hybrid inflation model". United States. doi:10.1103/PhysRevD.97.123522.
@article{osti_1454318,
title = {Gravity waves and proton decay in a flipped SU(5) hybrid inflation model},
author = {Rehman, Mansoor Ur and Shafi, Qaisar and Zubair, Umer},
abstractNote = {We revisit supersymmetric hybrid inflation in the context of the flipped SU(5) model. With minimal superpotential and minimal Kähler potential, and soft supersymmetry (SUSY) masses of order (1–100) TeV, compatibility with the Planck data yields a symmetry breaking scale M of flipped SU(5) close to (2–4) × 1015 GeV. This disagrees with the lower limit M ≳ 7 × 1015 GeV set from proton decay searches by the Super-Kamiokande collaboration. We show how M close to the unification scale 2 × 1016 GeV can be reconciled with SUSY hybrid inflation by employing a nonminimal Kähler potential. Proton decays into e+π0 with an estimated lifetime of order 1036 years. The tensor to scalar ratio r in this case can approach observable values ~10-4–10-3.},
doi = {10.1103/PhysRevD.97.123522},
journal = {Physical Review D},
number = 12,
volume = 97,
place = {United States},
year = {2018},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
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DOI: 10.1103/PhysRevD.97.123522

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