Possible capture of keV sterile neutrino dark matter on radioactive beta-decaying nuclei

	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
刊名	PHYSICS LETTERS B
	2011
卷号	695 期号:1-4 页码:#REF!
关键词	Sterile neutrinos Dark matter Beta decays Neutrino capture
通讯作者	Xing, ZZ (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
英文摘要	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.
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
收录类别	SCI
WOS记录号	WOS:000286708700037
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/226930]
专题	高能物理研究所_理论物理室
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!.