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arXiv 0912.1787hep-ph
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N_2主导的纤体发育中的洗出现象

Wash-Out in N_2-dominated leptogenesis

Florian Hahn-Woernle

摘要:

我们研究了通过随后的相互作用产生的宇宙学重子不对称性的清洗。因此,我们专注于一个方案,其中轻子不对称建立在下一个最轻的右手中微子的平衡衰变。我们应用完整的经典玻尔兹曼方程,没有动力学平衡的假设,并包括所有的量子统计因素来计算最轻的右手态的相互作用对轻子不对称性的洗脱。在我们的分析中,我们包括顶夸克的散射过程。这是特别感兴趣的,因为洗出增强散射和使用模式方程与量子统计分布函数。通过这种方式,我们为这种情况提供了对参数空间的限制。

英文摘要:

We study the wash-out of a cosmological baryon asymmetry produced via leptogenesis by subsequent interactions. Therefore we focus on a scenario in which a lepton asymmetry is established in the out-of-equilibrium decays of the next-to-lightest right-handed neutrino. We apply the full classical Boltzmann equations without the assumption of kinetic equilibrium and including all quantum statistical factors to calculate the wash-out of the lepton asymmetry by interactions of the lightest right-handed state. We include scattering processes with top quarks in our analysis. This is of particular interest since the wash-out is enhanced by scatterings and the use of mode equations with quantum statistical distribution functions. In this way we provide a restriction on the parameter space for this scenarios.

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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