2012/12/11 by M. M. Guzzo, Marcelo Moraes Guzzo, P. C. de Holanda +3 · 6 citations
Physics and Astronomy · #Anomalous magnetic dipole moment #Astrophysics and Cosmic Phenomena #Condensed matter physics #Electron #Lepton #Magnetic field #Magnetic moment #Mixing (physics) #Neutrino #Neutrino Physics Research #Neutrino oscillation #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #Solar neutrino #Solar neutrino problem #astro-ph.SR #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevd.97.093006
published in Physical review. D/Physical review. D. 97(9) (American Physical Society) · discussion of previous limits included, references added
arxiv created 2012/12/11 · openalex publication_date 2018/05/18 · arxiv updated 2018/05/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
The relatively large value of the neutrino mixing angle \ensuremathθ13 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, \ensuremathμ23. 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 \ensuremathμ23\ensuremath≠0. Using KamLAND limits on the solar flux of electron antineutrino, we set the limit \ensuremathμ23<0.95\ifmmode×\else\texttimes\fi10^\ensuremath-11\ensuremathμB as a reasonable assumption on the behavior of solar magnetic fields. This is the first time that a limit on \ensuremathμ23 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.