Combining Accelerator and Reactor Measurements of theta_13; The First Result

Details Combining Accelerator and Reactor Measurements of theta_13; The First Result Combining Accelerator and Reactor Measurements of theta_13; The First Result

2011-11-14

arxiv.org/abs/1111.3330v3

Physics

High Energy Physics

High Energy Physics - Phenomenology

Revised version upon request by JHEP editor, Daya Bay included, the final one before RENO, 11 pages, 4 figures

Scientific paper

The lepton mixing angle \theta_13, the only unknown angle in the standard three-flavor neutrino mixing scheme, is finally measured by the recent reactor and accelerator neutrino experiments. We perform a combined analysis of the data coming from T2K, MINOS, Double Chooz and Daya Bay experiments and find sin^2 2theta_13 =0.089 +- 0.016 (0.047) at 1 \sigma (3 \sigma) CL and that the hypothesis \theta_13 = 0 is now rejected at a significance level higher than 6 \sigma. We also discuss the near future expectation on the precision of the \theta_13 determination by using expected data from these ongoing experiments as well as another reactor experiment RENO.

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