Plateau Inflation in SUGRA-MSSM

Abstract

We explored a Higgs inflationary scenario in the SUGRA embedding of the MSSM in Einstein frame where the inflaton is contained in the $SU(2)$ Higgs doublet. We include all higher order non-renormalizable terms to the MSSM superpotential and an appropriate Kähler potential which can provide slow-roll inflaton potential in the $D-$flat direction. In this model, a plateau-like inflation potential can be obtained if the imaginary part of the neutral Higgs acts as the inflaton. The inflationary predictions of this model are consistent with the latest CMB observations. The model represents a successful Higgs inflation scenario in the context of Supergravity and it is compatible with Minimal Supersymmetric extension of the Standard Model.

5 pages, 2 figures. Replaced with the journal version. Accepted in Phys. Lett. B

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• Lower tensor to scalar ratio in a SUGRA motivated inflationary potential
• SUSY-Breaking Scenarios With a Mildly Violated R Symmetry
• Plateau Inflation in $R$-parity Violating MSSM
• Supergravity Model of Inflation and Explaining IceCube HESE Data via PeV Dark Matter Decay
• Inflation, reheating, leptogenesis and bounds on soft supersymmetry breaking parameters