Higgs Thermal Nonequilibrium in Primordial QGP
Abstract
In this work we investigate the chemical and kinetic nonequilibrium dynamics of the Higgs boson during the primordial Universe QGP (quark-gluon plasma) epoch 130\,GeV>T>10\,GeV. We show that the Higgs bosons is always out of chemical abundance equilibrium with a fugacity h = 0.69 due to virtual decay channels. Additionally, Higgs momentum distribution is found to be ``cold'' for T<25\,GeV, since the scattering rate drops below the production rate.
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