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Indirect unitarity violation entangled with matter effects in reactor antineutrino oscillations
Li YF(李玉峰); Xing ZZ(邢志忠); Zhu JY(朱靖宇); Li, YF; Xing, ZZ; Zhu, JY
Source PublicationPHYSICS LETTERS B
AbstractIf finite but tiny masses of the three active neutrinos are generated via the canonical seesaw mechanism with three heavy sterile neutrinos, the 3 x3 Pontecorvo-Maki-Nakagawa-Sakata neutrino mixing matrix Vwill not be exactly unitary. This kind of indirect unitarity violation can be probed in a precision reactor antineutrino oscillation experiment, but it may be entangled with terrestrial matter effects as both of them are very small. We calculate the probability of (nu) over bar (e) -> (nu) over bar (e) oscillations in a good analytical approximation, and find that, besides the zero-distance effect, the effect of unitarity violation is always smaller than matter effects, and their entanglement does not appear until the next-to-leading-order oscillating terms are taken into account. Given a 20-kiloton JUNO-like liquid scintillator detector, we reaffirm that terrestrial matter effects should not be neglected but indirect unitarity violation makes no difference, and demonstrate that the experimental sensitivities to the neutrino mass ordering and a precision measurement of theta(12) and Delta(21) equivalent to m(2)(2) - m(1)(2) are robust. (C) 2018 The Author(s). Published by Elsevier B.V.
Indexed BySCI
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Nuclear ; Physics, Particles & Fields
WOS IDWOS:000438486900086
ADS Bibcode2018PhLB..782..578L
Citation statistics
Cited Times:11 [INSPIRE]
Cited Times:16 [ADS]
Document Type期刊论文
Corresponding AuthorZhu JY(朱靖宇)
First Author AffilicationInstitute of High Energy
Corresponding Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Li YF,Xing ZZ,Zhu JY,et al. Indirect unitarity violation entangled with matter effects in reactor antineutrino oscillations[J]. PHYSICS LETTERS B,2018,782:578-588.
APA 李玉峰,邢志忠,朱靖宇,Li, YF,Xing, ZZ,&Zhu, JY.(2018).Indirect unitarity violation entangled with matter effects in reactor antineutrino oscillations.PHYSICS LETTERS B,782,578-588.
MLA 李玉峰,et al."Indirect unitarity violation entangled with matter effects in reactor antineutrino oscillations".PHYSICS LETTERS B 782(2018):578-588.
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