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Do Stops Slow Down Electroweak Bubble Walls?
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We compute the wall velocity in the MSSM. We therefore generalize the SM equations of motion for bubble walls moving through a hot plasma at the electroweak phase transition and calculate the friction terms which describe the viscosity of the plasma. We give the general expressions and apply them to a simple model where stops, tops and W bosons contribute to the friction. In a wide range of parameters including those which fulfil the requirements of baryogenesis we find a wall velocity of order v = 0.05-0.1 much below the SM value.
Forward citations
Cited by 3 Pith papers
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Bubble wall velocities in local thermal equilibrium are computed for three BSM models and found to be nearly universal when expressed via the critical temperature and supercooling, with only deflagration solutions.
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