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arXiv · hep-ph/0203118

Production of massive stable particles in inflaton decay

Rouzbeh Allahverdi·Manuel Drees
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Abstract

We point out that inflaton decays can be a copious source of stable or long--lived particles $χ$ with mass exceeding the reheat temperature $T_R$. Once higher order processes are included, this statement is true for any $χ$ particle with renormalizable (gauge or Yukawa) interactions. This contribution to the $χ$ density often exceeds the contribution from thermal $χ$ production, leading to significantly stronger constraints on model parameters than those resulting from thermal $χ$ production alone. For example, we all but exclude models containing stable charged particles with mass less than half the mass of the inflaton.

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Rouzbeh Allahverdi, Manuel Drees. 2002-08-12. Production of massive stable particles in inflaton decay. https://doi.org/10.1103/physrevlett.89.091302

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