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Title: μ -term hybrid inflation and split supersymmetry

Abstract

We consider μ-term hybrid inflation which, in its minimal format with gravity mediated supersymmetry breaking, leads to split supersymmetry. The MSSM μ-term in this framework is larger than the gravitino mass mG, and successful inflation requires mG (and hence also |μ|) ≳ 5 × 10 7 GeV, such that the gravitino decays before the LSP neutralino freezes out. Assuming universal scalar masses of the same order as mG, this leads to split supersymmetry. The LSP wino with mass ≃ 2 TeV is a plausible dark matter candidate, the gluino may be accessible at the LHC, and the MSSM parameter β ≃ 1.7 in order to be compatible with the measured Higgs boson mass. The tensor-to-scalar ratio r, a canonical measure of gravity waves, can be as high as 0.001.

Authors:
;
Publication Date:
Research Org.:
Univ. of Alabama, Tuscaloosa, AL (United States); Univ. of Delaware, Newark, DE (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1408531
Alternate Identifier(s):
OSTI ID: 1499147
Grant/Contract Number:  
SC0013680; SC0013880
Resource Type:
Published Article
Journal Name:
Physics Letters B
Additional Journal Information:
Journal Name: Physics Letters B Journal Volume: 775 Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 79 ASTRONOMY AND ASTROPHYSICS

Citation Formats

Okada, Nobuchika, and Shafi, Qaisar. μ -term hybrid inflation and split supersymmetry. Netherlands: N. p., 2017. Web. doi:10.1016/j.physletb.2017.11.015.
Okada, Nobuchika, & Shafi, Qaisar. μ -term hybrid inflation and split supersymmetry. Netherlands. doi:10.1016/j.physletb.2017.11.015.
Okada, Nobuchika, and Shafi, Qaisar. Fri . "μ -term hybrid inflation and split supersymmetry". Netherlands. doi:10.1016/j.physletb.2017.11.015.
@article{osti_1408531,
title = {μ -term hybrid inflation and split supersymmetry},
author = {Okada, Nobuchika and Shafi, Qaisar},
abstractNote = {We consider μ-term hybrid inflation which, in its minimal format with gravity mediated supersymmetry breaking, leads to split supersymmetry. The MSSM μ-term in this framework is larger than the gravitino mass mG, and successful inflation requires mG (and hence also |μ|) ≳ 5 × 107 GeV, such that the gravitino decays before the LSP neutralino freezes out. Assuming universal scalar masses of the same order as mG, this leads to split supersymmetry. The LSP wino with mass ≃ 2 TeV is a plausible dark matter candidate, the gluino may be accessible at the LHC, and the MSSM parameter β ≃ 1.7 in order to be compatible with the measured Higgs boson mass. The tensor-to-scalar ratio r, a canonical measure of gravity waves, can be as high as 0.001.},
doi = {10.1016/j.physletb.2017.11.015},
journal = {Physics Letters B},
number = C,
volume = 775,
place = {Netherlands},
year = {2017},
month = {12}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1016/j.physletb.2017.11.015

Citation Metrics:
Cited by: 1 work
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Figures / Tables:

Fig. 1 Fig. 1: Spectral index ns vs. B as defined in Eq. (5). The region between the two dotted (dashed) lines corresponds to 1σ (2σ ) limit obtained by Planck 2015 [6].

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Works referencing / citing this record:

Induced-gravity GUT-scale Higgs inflation in supergravity
journal, June 2018


Induced-gravity GUT-scale Higgs inflation in supergravity
journal, June 2018


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