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Constraining astrophysical neutrino flavor composition from leptonic unitarity

文献类型：期刊论文

作者Xu, Xun-Jie1,2; He, Hong-Jian1,2,3; Rodejohann, Werner4
刊名JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
出版日期2014-12-01
ISSN号1475-7516
关键词Neutrino Properties Neutrino Theory Ultra High Energy Photons And Neutrinos
DOI10.1088/1475-7516/2014/12/039
文献子类Article
英文摘要The recent IceCube observation of ultra-high-energy astrophysical neutrinos has begun the era of neutrino astronomy. In this work, using the unitarity of leptonic mixing matrix, we derive nontrivial unitarity constraints on the flavor composition of astrophysical neutrinos detected by IceCube. Applying leptonic unitarity triangles, we deduce these unitarity bounds from geometrical conditions, such as triangular inequalities. These new bounds generally hold for three flavor neutrinos, and are independent of any experimental input or the pattern of lepton mixing. We apply our unitarity bounds to derive general constraints on the flavor compositions for three types of astrophysical neutrino sources (and their general mixture), and compare them with the IceCube measurements. Furthermore, we prove that for any sources without nu(tau) neutrinos, a detected nu(mu) ux ratio < 1/4 will require the initial flavor composition with more nu(e) neutrinos than nu(mu) neutrinos.
WOS关键词MODEL ; VIOLATION ; MASS
语种英语
出版者IOP PUBLISHING LTD
WOS记录号WOS:000350115800008
源URL[http://119.78.100.186/handle/113462/49365]  
专题中国科学院近代物理研究所
通讯作者Xu, Xun-Jie
作者单位1.Tsinghua Univ, Inst Modern Phys, Beijing 100084, Peoples R China
2.Tsinghua Univ, Ctr High Energy Phys, Beijing 100084, Peoples R China
3.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
4.Max Planck Inst Kernphys, D-69029 Heidelberg, Germany
推荐引用方式
GB/T 7714		 Xu, Xun-Jie,He, Hong-Jian,Rodejohann, Werner. Constraining astrophysical neutrino flavor composition from leptonic unitarity[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2014.
APA Xu, Xun-Jie,He, Hong-Jian,&Rodejohann, Werner.(2014).Constraining astrophysical neutrino flavor composition from leptonic unitarity.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS.
MLA Xu, Xun-Jie,et al."Constraining astrophysical neutrino flavor composition from leptonic unitarity".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2014).

入库方式： OAI收割

来源：近代物理研究所

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