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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

New limits on neutrino magnetic moment through nonvanishing 13-mixing

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Guzzo, M. M. [1] ; de Holanda, P. C. [1] ; Peres, O. L. G. [1, 2]
Total Authors: 3
[1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP - Brazil
[2] Abdus Salaam Int Ctr Theoret Phys, Abdus Salam Int Ctr Theoret Phys, I-34010 Trieste - Italy
Total Affiliations: 2
Document type: Journal article
Source: Physical Review D; v. 97, n. 9 MAY 18 2018.
Web of Science Citations: 2

The relatively large value of the neutrino mixing angle theta(13) set by recent measurements allows us to use solar neutrinos to set a limit on the neutrino magnetic moment involving the second and third flavor families, mu(23). The existence of a random magnetic field in the solar convective zone can produce a significant antineutrino flux when a nonvanishing neutrino magnetic moment is assumed. Even if we consider a vanishing neutrino magnetic moment involving the first family, electron antineutrinos are indirectly produced through the mixing between the first and third families and mu(23 )not equal 0. Using KamLAND limits on the solar flux of electron antineutrino, we set the limit mu(23) < 0.95 x 10(-1)(1)mu(B )as a reasonable assumption on the behavior of solar magnetic fields. This is the first time that a limit on mu(23) has been established in the literature directly from neutrino interactions with magnetic fields, and, interestingly enough, is comparable with the limits on the neutrino magnetic moment involving the first family and with the ones coming from modifications to the electroweak cross section. (AU)

FAPESP's process: 14/19164-6 - Challenges in the 21st century in neutrino physics and astrophysics
Grantee:Orlando Luis Goulart Peres
Support type: Research Projects - Thematic Grants
FAPESP's process: 12/16389-1 - Neutrino phenomenology
Grantee:Orlando Luis Goulart Peres
Support type: Regular Research Grants