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On the Measurement of Solar Neutrino Oscillation Parameters with KamLAND

Abhijit Bandyopadhyay·Sandhya Choubey·Srubabati Goswami·S. T. Petcov
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Abstract

A new reactor power plant Shika-2, with a power of approximately 4 GW and at a distance of about 88 km from the KamLAND detector is scheduled to start operating in March 2006. We study the impact of the $\barν_e$ flux from this reactor on the sensitivity of the KamLAND experiment to the solar neutrino oscillation parameters. We present results on prospective determination of $Δm^2_\odot$ and $\sin^2θ_\odot$ using the combined data from KamLAND and the solar neutrino experiments, including the effect of the Shika-2 contribution to the KamLAND signal and the latest data from the salt enriched phase of the SNO experiment. We find that contrary to the expectations, the addition of the Shika-2 reactor flux does not improve the $\sin^2θ_\odot$ sensitivity of KamLAND, while the ambiguity in $Δm^2_\odot$ measurement may even increase, as a result of the averaging effect between Kashiwazaki and the Shika-2 reactor contributions to the KamLAND signal.

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Abhijit Bandyopadhyay, Sandhya Choubey, Srubabati Goswami, S. T. Petcov. 2003-11-29. On the Measurement of Solar Neutrino Oscillation Parameters with KamLAND. https://doi.org/10.1016/j.physletb.2003.11.063

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