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On the Effect of theta_{13} on the Determination of Solar Oscillation Parameters at KamLAND

M. C. Gonzalez-Garcia·C. Peña-Garay
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Abstract

If the solution to the solar neutrino puzzle falls in the LMA region, KamLAND should be able to measure with good precision the corresponding oscillation parameters after a few years of data taking. Assuming a positive signal, we study their expected sensitivity to the solar parameters (theta_{12},Delta m^2_{21}) when considered in the framework of three-neutrino mixing after taking into account our ignorance on the mixing angle theta_{13}. We find a simple ``scaling'' dependence of the reconstructed theta_{12} range with the value of theta_{13} while the Delta m^2_{12} range is practically unaffected. Our results show that the net effect is approximately equivalent to an uncertainty on the overall neutrino flux normalization of up to sim 10 %.

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M. C. Gonzalez-Garcia, C. Peña-Garay. 2002-01-11. On the Effect of theta_{13} on the Determination of Solar Oscillation Parameters at KamLAND. https://doi.org/10.1016/s0370-2693(02)01178-4

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