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Top transport in electroweak baryogenesis

Lars Fromme·Stephan J. Huber
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Abstract

In non-supersymmetric models of electroweak baryogenesis the top quark plays a crucial role. Its CP-violating source term can be calculated in the WKB approximation. We point out how to resolve certain discrepancies between computations starting from the Dirac equation and the Schwinger--Keldysh formalism. We also improve on the transport equations, keeping the W-scatterings at finite rate. We apply these results to a model with one Higgs doublet, augmented by dimension-6 operators, where our refinements lead to an increase in the baryon asymmetry by a factor of up to about 5.

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Lars Fromme, Stephan J. Huber. 2006-05-09. Top transport in electroweak baryogenesis. https://doi.org/10.1088/1126-6708%2F2007%2F03%2F049

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