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arXiv 0811.0956hep-ph
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可测试的瘦体发生途径

Pathways to testable leptogenesis

Pei-Hong Gu, Utpal Sarkar

摘要:

在传统的中微子质量的跷跷板模型中,稀薄发生发生在非常高的尺度上。在文献中讨论了三种方法,以降低规模的leptogenesis:质量简并,层次的耦合和三体衰变。我们主张另一种方法来测试leptogenesis,即衰变粒子可以去平衡在一个可访问的规模由于运动学,虽然他们的耦合到衰变产物是更大的产生所需的CP不对称性。我们证明了这种新的可能性,可测试的leptogenesis在两个希格斯偶极子模型的中微子质量起源于一个单圈图。

英文摘要:

In the conventional seesaw models of neutrino masses, leptogenesis occurs at a very high scale. Three approaches have been discussed in the literature to lower the scale of leptogenesis: mass degeneracy, hierarchy of couplings and three-body decays. We advocate yet another approach to a testable leptogenesis, whereby the decaying particles could go out of equilibrium at an accessible scale due to kinematics, although their couplings to the decay products are larger for generating a desired CP asymmetry. We demonstrate this new possibility for the testable leptogenesis in a two Higgs doublet model where the neutrino masses originate from a one-loop diagram.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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