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Possible capture of keV sterile neutrino dark matter on radioactive beta-decaying nuclei
Li YF(李玉峰); Xing ZZ(邢志忠); Li, YF; Xing, ZZ
2011
发表期刊PHYSICS LETTERS B
卷号695期号:1-4页码:#REF!
通讯作者Xing, ZZ (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
摘要There exists an observed "desert" spanning six orders of magnitude between O(0.5) eV and O(0.5) MeV in the fermion mass spectrum. We argue that it might accommodate one or more keV sterile neutrinos as a natural candidate for warm dark matter. To illustrate this point of view, we simply assume that there is one key sterile neutrino nu(4) and its flavor eigenstate nu(s) weakly mixes with three active neutrinos. We clarify different active-sterile neutrino mixing factors for the radiative decay of nu(4) and beta decays in a self-consistent parametrization. A direct detection of this keV sterile neutrino dark matter in the laboratory is in principle possible since the nu(4) component of nu(e) can leave a distinct imprint on the electron energy spectrum when it is captured on radioactive beta-decaying nuclei. We carry out an analysis of its signatures in the capture reactions nu(e) + H-3 -> He-3 + e(-) and nu(e) + Ru-106 -> Rh-106 + e(-) against the beta-decay backgrounds, and conclude that this experimental approach might not be hopeless in the long run. (C) 2010 Elsevier B.V. All rights reserved.
文章类型Article
关键词Sterile neutrinos Dark matter Beta decays Neutrino capture
学科领域Physics
DOI10.1016/j.physletb.2010.11.015
收录类别SCI
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000286708700037
引用统计
被引频次:33[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/226930
专题理论物理室
实验物理中心
推荐引用方式
GB/T 7714
Li YF,Xing ZZ,Li, YF,et al. Possible capture of keV sterile neutrino dark matter on radioactive beta-decaying nuclei[J]. PHYSICS LETTERS B,2011,695(1-4):#REF!.
APA 李玉峰,邢志忠,Li, YF,&Xing, ZZ.(2011).Possible capture of keV sterile neutrino dark matter on radioactive beta-decaying nuclei.PHYSICS LETTERS B,695(1-4),#REF!.
MLA 李玉峰,et al."Possible capture of keV sterile neutrino dark matter on radioactive beta-decaying nuclei".PHYSICS LETTERS B 695.1-4(2011):#REF!.
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