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Solar neutrino masses and mixing from bilinear R-parity broken supersymmetry: Analytical versus numerical results
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Solar neutrino masses and mixing from bilinear R-parity broken supersymmetry: Analytical versus numerical results
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| Díaz, Marco Aurelio; Hirsch, Martin; Porod, Werner; Romao, J. C.; Furtado Valle, José Wagner | |||
| Aquest document és un/a article, creat/da en: 2003 | |||
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| We give an analytical calculation of solar neutrino masses and mixing at one-loop order within bilinear R-parity breaking supersymmetry, and compare our results to the exact numerical calculation. Our method is based on a systematic perturbative expansion of R-parity violating vertices to leading order. We find in general quite good agreement between the approximate and full numerical calculations, but the approximate expressions are much simpler to implement. Our formalism works especially well for the case of the large mixing angle Mikheyev-Smirnov-Wolfenstein solution, now strongly favored by the recent KamLAND reactor neutrino data. | |||
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