Exploring the sensitivity of current and future experiments to ${\theta }_{\odot }$

Abstract

However the allowed range of ${\theta }_{\odot }$ (${\theta }_{12}$) did not change much with the inclusion of the KamLAND results. In this paper we probe if future data from KamLAND can increase the accuracy of the allowed range in ${\theta }_{\odot }$ and conclude that even after 3 kton-year of statistics and most optimistic error estimates, KamLAND {\it may} find it hard to significantly improve the bounds on the mixing angle obtained from the solar neutrino data. We discuss the ${\theta }_{12}$ sensitivity of the survival probabilities in matter (vacuum) as is relevant for the solar (KamLAND) experiments. We find that the presence of matter effects in the survival probabilities for ${}^{8}B$ neutrinos give the solar neutrino experiments SK and SNO an edge over KamLAND, as far as ${\theta }_{12}$ sensitivity is concerned, particularly near maximal mixing. Among solar neutrino experiments we identify SNO as the most promising candidate for constraining ${\theta }_{12}$ and make a projected sensitivity test for the mixing angle by reducing the error in the neutral current measurement at SNO. Finally we argue that the most accurate bounds on ${\theta }_{12}$ can be achieved in a reactor experiment, if the corresponding baseline and energy can be tuned to a minimum in the survival probability. We propose a new reactor experiment which can give the value of ${\tan }^2{\theta }_{12}$ to within 14%. We also discuss the future Borexino and LowNu experiments.

Treatment of KamLAND systematics includes the most optimistic estimates. Final conclusion unchanged. Version to appear in PRD

References in corpus (14)

• First Results from KamLAND: Evidence for Reactor Anti-Neutrino Disappearance
• Indications of Neutrino Oscillation in a 250 km Long-baseline Experiment
• Search for neutrino oscillations on a long base-line at the CHOOZ nuclear power station
• Solar neutrino oscillation parameters after first KamLAND results
• Solar Neutrinos Before and After KamLAND
• Reactor Measurement of ${\theta }_{13}$ and Its Complementarity to Long-Baseline Experiments
• Oscillation Physics with a Neutrino Factory
• Combining first KamLAND results with solar neutrino data
• KamLAND and solar neutrino data eliminate the LOW solution
• The Solar Neutrino Problem after the first results from Kamland
• Global Analysis of Solar Neutrino and KamLAND Data
• Neutrino mass parameters from Kamland, SNO and other solar evidence
• Determining the oscillation parameters by Solar neutrinos and KamLAND
• SNO and the solar neutrino problem

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