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	Another look at the impact of an ev-mass sterile neutrino on the effective neutrino mass of neutrinoless double-beta decays
	Liu, Jun-Hao1,2; Zhou, Shun1,2,3
刊名	International journal of modern physics a
	2018-01-20
卷号	33期号:2页码:10
关键词	Majorana neutrinos Sterile neutrinos Neutrinoless double beta decays
ISSN号	0217-751X
DOI	10.1142/s0217751x18500148
通讯作者	Zhou, shun(zhoush@ihep.ac.cn)
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.
WOS研究方向	Physics
WOS类目	Physics, Nuclear ; Physics, Particles & Fields
语种	英语
出版者	WORLD SCIENTIFIC PUBL CO PTE LTD
WOS记录号	WOS:000423199200005
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2177942
专题	高能物理研究所
通讯作者	Zhou, Shun
作者单位	1.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 2.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 3.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Liu, Jun-Hao,Zhou, Shun. 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):10.
APA	Liu, Jun-Hao,&Zhou, Shun.(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),10.
MLA	Liu, Jun-Hao,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):10.

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