Mixing-induced CP violating sources for electroweak baryogenesis from a semiclassical approach

被引：0
|
作者：
Yu-Feng Zhou
机构：
[1] Korea Institute for Advanced Study,
来源：
The European Physical Journal C | 2008年 / 58卷
关键词：
98.80.Cq; 11.30.Er; 11.30.Fs;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The effects of flavor mixing in electroweak baryogenesis is investigated in a generalized semiclassical WKB approach. Through calculating the non-adiabatic corrections to the particle currents, it is shown that extra CP violation sources arise from the off-diagonal part of the equation of motion of particles moving inside the bubble wall. This type of mixing-induced source is of first order in a derivative expansion of the Higgs condensate, but it is oscillation suppressed. The numerical importance of the mixing-induced source is discussed in the minimal supersymmetric standard model and compared with the source term induced by a semiclassical force. It is found that in a large parameter space where oscillation suppression is not strong enough, the mixing-induced source can dominate over that from the semiclassical force.
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页码：301 / 309
页数：8
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