Gravitino problem in supergravity chaotic inflation and SUSY breaking scale after BICEP2

Kazunori Nakayama, Fuminobu Takahashi, Tsutomu T. Yanagida

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Gravitinos are generically produced by inflaton decays, which place tight constraints on inflation models as well as supersymmetry breaking scale. We revisit the gravitino production from decays of the inflaton and the supersymmetry breaking field, based on a chaotic inflation model suggested by the recent BICEP2 result. We study cosmological constraints on thermally and non-thermally produced gravitinos for a wide range of the gravitino mass, and show that there are only three allowed regions of the gravitino mass: m3/2 ≲ 16eV, m3/2 ≃ 10-1000TeV and m3/21013GeV.

Original languageEnglish
Pages (from-to)358-363
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume734
DOIs
Publication statusPublished - 2014 Jun 27

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Fingerprint Dive into the research topics of 'Gravitino problem in supergravity chaotic inflation and SUSY breaking scale after BICEP2'. Together they form a unique fingerprint.

Cite this