Journal
NUCLEAR PHYSICS B
Volume 598, Issue 1-2, Pages 291-305Publisher
ELSEVIER
DOI: 10.1016/S0550-3213(00)00768-9
Keywords
supersymmetry; electroweak phase transition; bubble wall velocity
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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 nu (omega) approximate to 10(-2) much below the SM value. (C) 2001 Published by Elsevier Science B.V.
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