Bounds on neutrino magnetic moment tensor from solar neutrinos

Details Bounds on neutrino magnetic moment tensor from solar neutrinos Bounds on neutrino magnetic moment tensor from solar neutrinos

2002-04-26

arxiv.org/abs/hep-ph/0204305v2

Phys.Rev. D66 (2002) 012003

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages latex file with 6 figures; References added, typos corrected, matches version to appear in Phys Rev D

Scientific paper

10.1103/PhysRevD.66.012003

Solar neutrinos with non-zero magnetic moments will contribute to the electron scattering rates in the Super-Kamiokande experiment. The magnetic moment scattering events in Super-K can be accommodated in the standard VO or MSW solutions by a change of the parameter space of mass square difference and mixing angle-but the shifted neutrino parameters obtained from Super-K will (for some values of neutrino magnetic moments) become incompatible with the fits from SNO, Gallium and Chlorine experiments. We compute the upper bounds on the Dirac and Majorana magnetic moments of solar neutrinos by simultaneously fitting all the observed solar neutrino rates. The bounds the magnetic moment matrix elements are of the order of 10^{-10} Bohr magnetron.

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