2006/05/31 by Motoi Endo, Koichi Hamaguchi, Fuminobu Takahashi · 4 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #astro-ph #hep-ph #hep-th
paper · pdf · doi:10.1103/physrevd.74.023531
published as Phys.Rev. D74 (2006) 023531 · 29 pages, no figure. v2: with several corrections, to appear in PRD
arxiv created 2006/07/03 · openalex publication_date 2006/07/28 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A heavy scalar field such as moduli or an inflaton generally mixes with a field responsible for the supersymmetry breaking. We study the scalar decay into the standard model particles and their superpartners, gravitinos, and the supersymmetry-breaking sector, particularly paying attention to decay modes that proceed via the mixing between the scalar and the supersymmetry-breaking field. The impacts of the new decay processes on cosmological scenarios are also discussed; the modulus field generically produces too many gravitinos, and most of the inflation models tend to result in too high reheating temperature and/or gravitino overproduction.