2002/03/31 by Rouzbeh Allahverdi, Manuel Drees · 11 citations
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #astro-ph #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.1103/physrevlett.89.091302
published as Phys.Rev.Lett. 89 (2002) 091302 · 4 revtex pages, 1 figure (uses axodraw). Slightly modified for better clarification, few changes in references. Final verssion published in Phys. Rev. Lett
openalex publication_date 2002/08/08 · arxiv created 2002/08/12 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We point out that inflaton decays can be a copious source of stable or long-lived particles chi with mass exceeding the reheat temperature T(R) but less than half the inflaton mass. Once higher order processes are included, this statement is true for any chi particle with renormalizable (gauge or Yukawa) interactions. This contribution to the chi density often exceeds the contribution from thermal chi production, leading to significantly stronger constraints on model parameters than those resulting from thermal chi production alone, particularly in models containing stable charged particles.