Electroweak baryogenesis with dimension-6 higgs interactions

L. Fromme
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引用次数: 4

Abstract

We present the computation of the baryon asymmetry in the SM amplified by dimension-6 Higgs interactions using the WKB approximation. Analyzing the one-loop potential it turns out that the phase transition is strongly first order in a wide range of the parameters. It is ensured not to wash out the net baryon number gained previously even for Higgs masses up to at least 170 GeV. In addition dimension-6 operators induce new sources of CP violation. Novel source terms which enhance the generated baryon asymmetry emerge in the transport equations. This model predicts a baryon to entropy ratio close to the observed value for a large part of the parameter space. The speech was mainly based on our recent work (D. Bodeker, L. Fromme, S.J. Huber, M. Seniuch, The baryon asymmetry in the standard model with a low cut-off, JHEP 0502 026 (2005) [hep-ph/0412366]).
6维希格斯相互作用下的电弱重子发生
我们提出了用WKB近似计算被6维希格斯相互作用放大的SM中的重子不对称性。分析了单环电位,发现在较宽的参数范围内,相变是强一阶的。即使希格斯粒子的质量至少达到170 GeV,它也不会冲掉之前获得的净重子数。此外,6维算子还引入了新的CP违反源。在输运方程中出现了新的增强重子不对称性的源项。该模型预测重子与熵的比值在大部分参数空间中接近观测值。该演讲主要基于我们最近的工作(D. Bodeker, L. Fromme, S.J. Huber, M. Seniuch, The重子不对称性在标准模型与低截止,JHEP 0502026 (2005) [hep-ph/0412366])。
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