LEPTOGENESIS IN MODELS WITH MULTI-HIGGS BOSONS
LEPTOGENESIS IN MODELS WITH MULTI-HIGGS BOSONS
复制标题
多希格斯玻色子模型中的轻子发生
DOI：
10.1142/s0217732302008174
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
N. Okada
中科院分区：
文献类型：
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作者：
T. Fukuyama;N. Okada
我们研究的leptogenesis方案中的模型与多希格斯双重态。结果表明，在传统的假设中，未被认真考虑的有效五维相互作用的洗出过程是有效的，由此产生的重子不对称性可以被指数抑制.这一事实意味着新的可能方案，即观察到的重子不对称性是被淘汰的轻子不对称性的残余，轻子不对称性最初比传统方案中的大得多。我们的新方案适用于一些中微子质量矩阵模型，预测太大的CP破坏参数，使他们通过冲洗过程是可行的。
We study the leptogenesis scenario in models with multi-Higgs doublets. It is pointed out that the washing-out process through the effective dimension-five interactions, which has not been taken into account seriously in the conventional scenario, can be effective, and the resultant baryon asymmetry can be exponentially suppressed. This fact implies new possible scenario where the observed baryon asymmetry is the remnant of the washed out lepton asymmetry which was originally much larger than the one in the conventional scenario. Our new scenario is applicable to some neutrino mass matrix models which predict too large CP-violating parameter and makes them viable through the washing-out process.