Kubo relations and radiative corrections for lepton number washout
Kubo relations and radiative corrections for lepton number washout
复制标题
Kubo 关系和轻子数冲刷的辐射校正
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
M. Laine
中科院分区：
文献类型：
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作者：
D. Bödeker;M. Laine
在含有右手中微子的标准模型的扩展中，轻子数的洗出率是通过轻子生成的重子生成情景中的关键成分。我们将这些速率与有限温度下的实时相关函数相关联，而不使用任何粒子近似。这些关系式适用于中微子汤川耦合的二次阶和标准模型耦合的所有阶。他们考虑到所有的旁观者过程，并适用于对称和希格斯阶段的电弱理论。我们使用的关系来计算冲洗率在下一个领导为了g，其中g表示标准模型规范或汤川耦合，无论是在非相对论和相对论制度。即使在非相对论区域，参数主导的辐射修正也只被g的一个幂所抑制。在非相对论区域，辐射修正使高温下的冲刷率增加了几个百分点，但在弱标度和相对论区域，它们是统一的。
The rates for lepton number washout in extensions of the Standard Model containing right-handed neutrinos are key ingredients in scenarios for baryogenesis through leptogenesis. We relate these rates to real-time correlation functions at finite temperature, without making use of any particle approximations. The relations are valid to quadratic order in neutrino Yukawa couplings and to all orders in Standard Model couplings. They take into account all spectator processes, and apply both in the symmetric and in the Higgs phase of the electroweak theory. We use the relations to compute washout rates at next-to-leading order in g, where g denotes a Standard Model gauge or Yukawa coupling, both in the non-relativistic and in the relativistic regime. Even in the non-relativistic regime the parametrically dominant radiative corrections are only suppressed by a single power of g. In the non-relativistic regime radiative corrections increase the washout rate by a few percent at high temperatures, but they are of order unity around the weak scale and in the relativistic regime.
来自共振机制第一原理的轻子发生
影响因子：
3
作者：
M. Garny;A. Kartavtsev;A. Hohenegger
通讯作者：
A. Hohenegger