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Effects of the axial isoscalar neutral-current for solar neutrino detection

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Effects of the axial isoscalar neutral-current for solar neutrino detection

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Bernabeu Alberola, José; Ericson, Torleif E.O.; Hernández Gajate, Eliecer; Ros Pallarés, José

Aquest document és un/a article, creat/da en: 1992

An essential assumption in the analysis of all the large solar neutrino experiments sensitive to neutral currents has been that the axial transitions are purely isovector. The recent results on the spin structure of the proton suggest the presence of an axial isoscalar neutral-current interaction. This would modify the assumed transition strengths for the neutral-current detection of solar neutrinos. We demonstrate that in the long wavelength limit a deuterium target is insensitive to such a mechanism. Our results for the situation of the planned BOREX experiment show that the suggested isoscalar strength would increase the observed rate by 30-40%, depending on the transition.

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