Effect of CP-violation on the sphaleron rate

Details Effect of CP-violation on the sphaleron rate Effect of CP-violation on the sphaleron rate

2000-02-15

arxiv.org/abs/hep-ph/0002164v2

Phys.Lett. B478 (2000) 275-279

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, final formula + some typos corrected

Scientific paper

10.1016/S0370-2693(00)00284-7

We calculate the effect of two CP-violating (dimension-eight) operators of the SU(2)-Higgs model on the motion along a particular path from the vacuum to the sphaleron. It turns out that CP-violation may introduce a difference between the sphaleron rate towards larger Chern-Simons number and the rate towards smaller Chern-Simons number. Such a difference induces a non-zero baryon-number without a first order phase transition.

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