Abstract
Nailing down the unknown neutrino mixing angle is one of the most important goals in current lepton physics. In this context, we perform a global analysis of neutrino oscillation data, focusing on , and including recent results [Neutrino 2008, Proceedings of the XXIII International Conference on Neutrino Physics and Astrophysics, Christchurch, New Zealand, 2008 (unpublished)]. We discuss two converging hints of , each at the level of : an older one coming from atmospheric neutrino data, and a newer one coming from the combination of solar and long-baseline reactor neutrino data. Their combination provides the global estimate , implying a preference for with non-negligible statistical significance ( C.L.). We discuss possible refinements of the experimental data analyses, which might sharpen such intriguing indications.
- Received 17 June 2008
DOI:https://doi.org/10.1103/PhysRevLett.101.141801
©2008 American Physical Society