Thermal right-handed neutrino production rate in the non-relativistic regime
Thermal right-handed neutrino production rate in the non-relativistic regime
复制标题
非相对论状态下的热右手中微子产生率
DOI:
--
复制
发表时间:
2011
期刊:
影响因子:
--
通讯作者:
Y. Schröder
中科院分区:
文献类型:
--
作者:
M. Laine;Y. Schröder
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.
影响因子:
5.4
作者:
B. Garbrecht;Frank Glowna;Matti Herranen
通讯作者:
B. Garbrecht;Frank Glowna;Matti Herranen
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