Thermal right-handed neutrino production rate in the non-relativistic regime

Thermal right-handed neutrino production rate in the non-relativistic regime
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非相对论状态下的热右手中微子产生率

DOI:
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发表时间:
2011
期刊:
影响因子:
--
通讯作者:
Y. Schröder
Y. Schröder
中科院分区:
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文献类型:
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作者:
M. Laine;Y. Schröder

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在非相对论区域mtop ≲ πT ≪ M中,我们考虑重右手中微子的次序热产生率,其中mtop指的是弱电标度。用OPE语言重新表述问题,并使用与Salvio等人之前的分析不同的技术,我们确认了他们结果的一般结构和许多系数。我们还将分析扩展到非相对论展开的下一阶,从而揭示了主要的非平凡动量依赖,以及耦合中的NNLO,揭示了主要的热恢复敏感性。我们的结果被表示为简单的“主”结构的总和,这使得它们成为确定相对论体系πT ∼ M中的次要序率的合适起点。
A bstractWe consider the next-to-leading order thermal production rate of heavy right-handed neutrinos in the non-relativistic regime mtop ≲ πT ≪ M, where mtop refers to the electroweak scale. Rephrasing the problem in an OPE language and making use of different techniques than a previous analysis by Salvio et al, we confirm the general structure of their result and many of the coefficients. We also extend the analysis to the next order in the non-relativistic expansion, thereby revealing the leading non-trivial momentum dependence, as well as to NNLO in couplings, revealing the leading sensitivity to thermal resummations. Our results are expressed as a sum of simple “master” structures, which renders them a suitable starting point for determining the next-to-leading order rate also in the relativistic regime πT ∼ M.
DOI: 10.1007/jhep04(2013)099
发表时间: 2013-02
影响因子: 5.4
作者:
B. Garbrecht;Frank Glowna;Matti Herranen
通讯作者: B. Garbrecht;Frank Glowna;Matti Herranen
轻子发生的散射率:轻子味道相干性的阻尼和单线态中微子的产生
DOI: 10.1016/j.nuclphysb.2013.08.020
发表时间: 2013
期刊: Nuclear Physics
影响因子: --
作者:
B. Garbrecht;F. Glowna;P. Schwaller
通讯作者: P. Schwaller