μ-term hybrid inflation and split supersymmetry

Okada, Nobuchika; Shafi, Qaisar

doi:10.1016/j.physletb.2017.11.015

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 m_G, and successful inflation requires m_G (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 m_G, 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:: Okada, Nobuchika; Shafi, Qaisar

Publication Date:: Fri Dec 01 00:00:00 EST 2017

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)

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.

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                    Okada, Nobuchika, & Shafi, Qaisar. μ-term hybrid inflation and split supersymmetry.  Netherlands.  https://doi.org/10.1016/j.physletb.2017.11.015

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                    Okada, Nobuchika, and Shafi, Qaisar. Fri .  
"μ-term hybrid inflation and split supersymmetry".  Netherlands.  https://doi.org/10.1016/j.physletb.2017.11.015.

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@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         = {Fri Dec 01 00:00:00 EST 2017},

  month        = {Fri Dec 01 00:00:00 EST 2017}

}

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Cited by: 9 works

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Fig. 1: Spectral index n_s 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

Pallis, Constantinos; Shafi, Qaisar
The European Physical Journal C, Vol. 78, Issue 6
DOI: 10.1140/epjc/s10052-018-5980-0

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

Pallis, Constantinos; Shafi, Qaisar
The European Physical Journal C, Vol. 78, Issue 6
DOI: 10.1140/epjc/s10052-018-5980-0

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Title: μ-term hybrid inflation and split supersymmetry

Abstract

Citation Formats

Figures / Tables:

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

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

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