Another look at the impact of an eV-mass sterile neutrino on the effective neutrino mass of neutrinoless double-beta decays

doi:10.1142/S0217751X18500148

	Another look at the impact of an eV-mass sterile neutrino on the effective neutrino mass of neutrinoless double-beta decays
	Liu JH(刘峻豪); Zhou S(周顺); Zhou, S; Liu, JH
刊名	INTERNATIONAL JOURNAL OF MODERN PHYSICS A
	2018
卷号	33 期号:2 页码:1850014
关键词	Majorana neutrinos sterile neutrinos neutrinoless double beta decays
ISSN号	0217-751X
DOI	10.1142/S0217751X18500148
文献子类	Article
英文摘要	The possible existence of an eV-mass sterile neutrino, slightly mixing with ordinary active neutrinos, is not yet excluded by neutrino oscillation experiments. Assuming neutrinos to be Majorana particles, we explore the impact of such a sterile neutrino on the effective neutrino mass of neutrinoless double-beta decays < m >'(ee) equivalent to m(1)vertical bar V-e1 vertical bar(2)e(i rho) + m(2)vertical bar V-e2 vertical bar(2) + m(3)vertical bar V-e3 vertical bar(2)e(i sigma) + m(4)vertical bar V-e4 vertical bar(2)e(i)w, where m(i) and V-ei, (for i = 1, 2,3, 4) denote respectively the absolute masses and the first-row elements of the 4 x 4 neutrino flavor mixing matrix V, for which a full parametrization involves three Majorana-type CP-violating phases {rho,sigma,omega}. A zero effective neutrino mass vertical bar < m >'(ee)vertical bar = 0 is possible, no matter whether three active neutrinos take the normal or inverted mass ordering, and its implications for the parameter space are examined in great detail. In particular, given the best-fit values of m(4) approximate to 1.3 eV and vertical bar V-e4 vertical bar(2) approximate to 0.019 from the latest global analysis of neutrino oscillation data, a three-dimensional view of vertical bar < m >'(ee)vertical bar in the (m(lightest,rho))-plane is presented and further compared with that of the counterpart vertical bar < m >'(ee)vertical bar in the absence of any sterile neutrino.
电子版国际标准刊号	1793-656X
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:000423199200005
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285564]
专题	高能物理研究所_理论物理室
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Liu JH,Zhou S,Zhou, S,et al. Another look at the impact of an eV-mass sterile neutrino on the effective neutrino mass of neutrinoless double-beta decays[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS A,2018,33(2):1850014.
APA	刘峻豪,周顺,Zhou, S,&Liu, JH.(2018).Another look at the impact of an eV-mass sterile neutrino on the effective neutrino mass of neutrinoless double-beta decays.INTERNATIONAL JOURNAL OF MODERN PHYSICS A,33(2),1850014.
MLA	刘峻豪,et al."Another look at the impact of an eV-mass sterile neutrino on the effective neutrino mass of neutrinoless double-beta decays".INTERNATIONAL JOURNAL OF MODERN PHYSICS A 33.2(2018):1850014.