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arXiv · hep-ph/9801306

GUT baryogenesis after preheating: numerical study of the production and decay of X-bosons

E. W. Kolb·A. Riotto·I. I. Tkachev
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Abstract

We perform a fully non-linear calculation of the production of supermassive Grand Unified Theory (GUT) $X$ bosons during preheating, taking into account the fact that they are unstable with a decay width $Γ_X$. We show that parametric resonance does not develop if $Γ_X$ is larger than about $10^{-2} m_X$. We compute the nonthermal number density of superheavy bosons produced in the preheating phase and demonstrate that the observed baryon asymmetry may be explained by GUT baryogenesis after preheating if $Γ_X$ is smaller than about $10^{-3} m_X$.

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E. W. Kolb, A. Riotto, I. I. Tkachev. 1998-01-16. GUT baryogenesis after preheating: numerical study of the production and decay of X-bosons. https://doi.org/10.1016/s0370-2693(98)00134-8

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