Electron capture on ^{8}B nuclei and Superkamiokande results

Details Electron capture on ^{8}B nuclei and Superkamiokande results Electron capture on ^{8}B nuclei and Superkamiokande results

1999-04-27

arxiv.org/abs/hep-ph/9904463v1

Phys.Lett. B460 (1999) 437-441

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, incl. 3 figures (epsfig)

Scientific paper

10.1016/S0370-2693(99)00800-X

The energy spectrum of recoil electrons from solar neutrino scattering, as observed by Superkamiokande, is deformed with respect to that expected from SSM calculations. We considered \nu-e scattering from neutrinos produced by the electron-capture on ^{8}B nuclei, e^{-}+^{8}B --> ^{8}Be^{*}+\nu_{e}, as a possible explanation of the spectral deformation. A flux \Phi_{eB}\simeq 10^{4} cm^{-2} s^{-1} could account for Superkamiokande solar neutrino data. However this explanation is untenable, since the theoretical prediction, \Phi_{eB}=(1.3+-0.2) cm^{-2} s^{-1}, is smaller by four orders of magnitude.

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