PeV-scale supersymmetry from new inflation

Kazunori Nakayama, Fuminobu Takahashi

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

We show that heavy supersymmetric particles around O(100) TeV to O(1) PeV naturally appear in new inflation in which the Higgs boson responsible for the breaking of U(1) B-L plays the role of inflaton. Most important, the supersymmetric breaking scale is bounded above by the inflationary dynamics, in order to suppress the Coleman-Weinberg potential which would otherwise spoil the slow-roll inflation. Our scenario has rich phenomenological and cosmological implications: the Higgs boson mass at around 125 GeV can be easily explained, non-thermal leptogenesis works automatically, the gravitino production from inflaton decay is suppressed, the dark matter is either the lightest neutralino or the QCD axion, and the upper bound on the inflation scale for the modulus stabilization can be marginally satisfied.

Original languageEnglish
Article number035
JournalJournal of Cosmology and Astroparticle Physics
Volume2012
Issue number5
DOIs
Publication statusPublished - 2012 May 1

Keywords

  • inflation
  • leptogenesis
  • particle physics - cosmology connection
  • physics of the early universe

ASJC Scopus subject areas

  • Astronomy and Astrophysics

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