Solar neutrino oscillation parameters after KamLAND

Goswami, S. ; Bandyopadhyay, A. ; Choubey, S. (2004) Solar neutrino oscillation parameters after KamLAND Physics of Atomic Nuclei, 67 (6). pp. 1076-1083. ISSN 1063-7788

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We explore the impact of the data from the KamLAND experiment in constraining neutrino mass and mixing angles involved in solar neutrino oscillations. In particular, we discuss the precision with which we can determine the mass squared difference Δm☉2 and the mixing angle θ☉ from combined solar and KamLAND data. We show that the precision with which Δm☉2 can be determined improves drastically with the KamLAND data, but the sensitivity of KamLAND to the mixing angle is not as good. We study the effect of enhanced statistics in KamLAND as well as reduced systematics in improving the precision. We also show the effect of the SNO salt data in improving the precision. Finally, we discuss how a dedicated reactor experiment with a baseline of 70 km can improve the θ⊙ sensitivity by a large amount.

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