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Flavor distribution of UHE cosmic neutrino oscillations at neutrino telescopes
Xing ZZ(邢志忠); Xing, ZZ
2009
发表期刊NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
卷号602期号:1页码:#REF!
通讯作者Xing, ZZ (reprint author), Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China.
文章类型Article; Proceedings Paper
摘要If the Ultrahigh-energy (UHE) cosmic neutrinos produced from a distant astrophysical source can be measured at a km(3)-size neutrino telescope Such as the IceCube or KM3NeT, they will open a new window to understand the nature of flavor mixing and to probe possible new physics. Considering the conventional UHE cosmic neutrino source with the flavor ratio phi(e) : phi(mu) : phi(tau) = 1 : 2 : 0, I point out two sets of conditions for the flavor democracy phi(T)(e) : phi(T)(mu) : phi(T)(tau) = 1 : 1 : 1 to show up at neutrino telescopes: either 0(13) = 0 and 0(23) = pi/4 (CP invariance) or delta = +/-pi/2 and theta(23) = pi/4 (CP violation) in the standard parametrization of the 3 x 3 neutrino mixing matrix V. Allowing for slight mu-tau symmetry breaking effects characterized by Delta is an element of [-0.1, +0.1], 1 find phi T-e : phi T-mu : phi T-tau = (1-2 Delta) : (1 + Delta) : (1 + Delta) as a good approximation. Another possibility to constrain Delta is to detect the (nu) over bar (e) flux of E-(nu) over bare approximate to 6.3 PeV via the Glashow resonance channel (nu) over bar (e)e -> W- -> anything. I also give some brief comments on (1) possible non-unitarity of V in the seesaw framework and its effects on the flavor distribution at neutrino telescopes and (2) a generic description and determination of the cosmic neutrino flavor composition at distant astrophysical sources. (C) 2009 Elsevier B.V. All rights reserved.
关键词UHE neutrinos Flavor mixing Neutrino oscillations Neutrino telescopes
学科领域Instruments & Instrumentation; Nuclear Science & Technology; Physics; Spectroscopy
DOI10.1016/j.nima.2008.12.018
收录类别SCI
WOS类目Instruments & Instrumentation ; Nuclear Science & Technology ; Physics, Particles & Fields ; Spectroscopy
WOS记录号WOS:000265810100011
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/225816
专题理论物理室
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Xing ZZ,Xing, ZZ. Flavor distribution of UHE cosmic neutrino oscillations at neutrino telescopes[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,2009,602(1):#REF!.
APA 邢志忠,&Xing, ZZ.(2009).Flavor distribution of UHE cosmic neutrino oscillations at neutrino telescopes.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,602(1),#REF!.
MLA 邢志忠,et al."Flavor distribution of UHE cosmic neutrino oscillations at neutrino telescopes".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 602.1(2009):#REF!.
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