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Solar neutrino oscillation parameters after KamLAND

2003/12/02 by Srubabati Goswami, Sreetama Goswami, Abhijit Bandyopadhyay +2
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ph

paper · pdf · doi:10.1134/1.1772440

published as Phys.Atom.Nucl. 67 (2004) 1076-1083; Yad.Fiz. 67 (2004) 1104-1111 · Talk given at 4th International Conference on Nonaccelerator New Physics (NANP 03), Dubna, Russia, 23-28 Jun 2003

arxiv created 2003/12/02 · openalex publication_date 2004/06/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

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.

Citations