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

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

1998-01-14

arxiv.org/abs/hep-ph/9801306v2

Phys.Lett. B423 (1998) 348-354

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, LaTeX file, 3 figures. One reference added and minor changes

Scientific paper

10.1016/S0370-2693(98)00134-8

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 $\Gamma_X$. We show that parametric resonance does not develop if $\Gamma_X$ 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 $\Gamma_X$ is smaller than about $10^{-3} m_X$.

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