Abstract
We present new constraints on the neutrino oscillation parameters , , and from a three-flavor analysis of solar and KamLAND data. The KamLAND data set includes data acquired following a radiopurity upgrade and amounts to a total exposure of target-proton-year. Under the assumption of invariance, a two-flavor analysis () of the KamLAND and solar data yields the best-fit values and ; a three-flavor analysis with as a free parameter yields the best-fit values , , and . This interval is consistent with other recent work combining the CHOOZ, atmospheric and long-baseline accelerator experiments. We also present a new global analysis, incorporating the CHOOZ, atmospheric, and accelerator data, which indicates . A nonzero value is suggested, but only at the 79% C.L.
- Received 25 September 2010
DOI:https://doi.org/10.1103/PhysRevD.83.052002
© 2011 American Physical Society