Can MSSM Particle be the Inflaton?

Abstract

We consider the possibility of using one of the $D$-flat directions in the minimal supersymmetric standard model (MSSM) as the inflaton. We show that the flat direction consisting of (first generation) left- and right-handed up-squarks as well as the up-type Higgs boson may play the role of the inflaton if dominant part of the up-quark mass is radiatively generated from supersymmetric loop diagrams. We also point out that, if the R-parity violating Yukawa coupling is of $O(10^{-7})$, $R$-odd $D$-flat directions may be another possible candidate of the inflaton. Such inflation models using $D$-flat directions in the MSSM are not only testable with collider experiments but also advantageous to resolve the problem how the inflaton reheats the universe.

13 pages, 1 figure; an explanatory comment and references are added

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Cited by in corpus (20)

• Gauge invariant MSSM inflaton
• Inflaton Decay in Supergravity
• Running Kinetic Inflation
• Supergravity based inflation models: a review
• A-term inflation and the smallness of the neutrino masses
• Non-gaussianity and cosmic uncertainty in curvaton-type models
• Inflection point inflation within supersymmetry
• Higgs Chaotic Inflation in Standard Model and NMSSM
• Probing the parameter space for an MSSM inflation and the neutralino dark matter
• MSSM inflation
• Supergravity Higgs Inflation and Shift Symmetry in Electroweak Theory
• General Analysis of Inflation in the Jordan frame Supergravity
• Generating curvature perturbations with or without MSSM flat directions
• Curvaton Scenario with Affleck-Dine Baryogenesis
• Inflation scenario driven by a low energy physics inflaton
• Low scale inflation and the immediate heavy curvaton decay
• Flat Direction Inflation with Running Kinetic Term and Baryogenesis
• The Origin of the Large-Scale Structure in the Universe: Theoretical and Statistical Aspects
• Smallness of Baryon Asymmetry from Split Supersymmetry
• Inflation and The Minimal Supersymmetric Standard Model