Neutrino mixing, CP and T violation, and textures in four-neutrino models

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	Neutrino mixing, CP and T violation, and textures in four-neutrino models
	Barger, V; Dai, YB; Whisnant, K; Young, BL; Barger, V , Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA.
刊名	PHYSICAL REVIEW D
	1999
卷号	59 期号:11 页码:-
关键词	Big-bang Nucleosynthesis Gev Energy-range Hot Dark-matter Sterile Neutrino Atmospheric Neutrinos Oscillation Experiments Lsnd Experiment (Nu)Over-bar(Mu)->(Nu)Over-bar(e) Oscillations Solar Neutrinos Lepton Number
ISSN号	0556-2821
英文摘要	We examine the prospects for determining the neutrino mixing matrix and for observing CP and T violation in neutrino oscillations in four-neutrino models. We focus on a general class of four-neutrino models with two pairs of nearly degenerate mass eigenstates separated by approximately 1 eV, which can describe the solar, atmospheric and LSND neutrino data. We present a general parametrization of these models and discuss In detail the determination of the mixing parameters and the mass matrix texture from current and future neutrino data in the case where nu(e) and nu(mu) each mix primarily with one other neutrino. We find that measurable CP or T violation in long-baseline experiments, with amplitude at the level of the LSND signal, is possible given current experimental constraints. Also, additional oscillation effects in short- and long-baseline experiments may be measurable in many cases. We point put that, given separate scales for the mass-squared differences of the solar and atmospheric oscillations, observable CP or T violation effects in neutrino oscillations signal the existence of a sterile neutrino. We examine several textures of the neutrino mass matrix and determine which textures can have measurable CP or T violation in neutrino oscillations in long-baseline experiments. We also briefly discuss some possible origins of the neutrino mass terms in straightforward extensions of the standard model. [S0556-2821(99)00313-6].
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000080778900013
公开日期	2012-08-29
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/13141]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Barger, V , Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA.
推荐引用方式 GB/T 7714	Barger, V,Dai, YB,Whisnant, K,et al. Neutrino mixing, CP and T violation, and textures in four-neutrino models[J]. PHYSICAL REVIEW D,1999,59(11):-.
APA	Barger, V,Dai, YB,Whisnant, K,Young, BL,&Barger, V , Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA..(1999).Neutrino mixing, CP and T violation, and textures in four-neutrino models.PHYSICAL REVIEW D,59(11),-.
MLA	Barger, V,et al."Neutrino mixing, CP and T violation, and textures in four-neutrino models".PHYSICAL REVIEW D 59.11(1999):-.