Big bang nucleosynthesis constraints on sterile neutrino and lepton asymmetry of the Universe
Big bang nucleosynthesis constraints on sterile neutrino and lepton asymmetry of the Universe
复制标题
大爆炸核合成对宇宙惰性中微子和轻子不对称性的限制
DOI:
10.1088/1475-7516/2020/09/051
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发表时间:
2020
影响因子:
6.4
通讯作者:
Takhistov Volodymyr
中科院分区:
文献类型:
--
作者:
Gelmini Graciela B.;Kawasaki Masahiro;Kusenko Alexander;Murai Kai;Takhistov Volodymyr
We consider the cosmological effects of sterile neutrinos with the masses of 150–450 MeV. The decay of sterile neutrinos changes the thermal history of the Universe and affects the energy density of radiation at recombination and the big bang nucleosynthesis (BBN) results. We derive severe constraints on the parameters of sterile neutrinos from the primordial abundances of helium-4 and deuterium. We also find that in a particular model the constraints can be considerably relaxed by assuming a large lepton asymmetry in the active neutrinos. In this case, the consistent parameters result in N eff≃ 3.2–3.4 and can alleviate the Hubble tension.
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DOI:
10.2307/j.ctv1zjg9rt.7
发表时间:
2019-09
期刊:
21
影响因子:
--
作者:
V. Sorokin
通讯作者:
V. Sorokin
影响因子:
5.4
作者:
Mona Dentler;Álvaro Hernández-Cabezudo;J. Kopp;P. Machado;M. Maltoni;I. Martinez-Soler;T. Schwetz
通讯作者:
Mona Dentler;Álvaro Hernández-Cabezudo;J. Kopp;P. Machado;M. Maltoni;I. Martinez-Soler;T. Schwetz
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
G. Fuller;C. Kishimoto;A. Kusenko
通讯作者:
A. Kusenko
影响因子:
5
作者:
A. Kusenko
通讯作者:
A. Kusenko
影响因子:
6.4
作者:
E. Bellini;I. Sawicki;M. Zumalac'arregui
通讯作者:
E. Bellini;I. Sawicki;M. Zumalac'arregui