Combining accelerator and reactor measurements of theta(13): the first result

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, Daya Bay and RENO experiments and find sin(2)2 theta(13) = 0.096 +/- 0.013(+/- 0.040) at 1 sigma (3 sigma) CL and that the hypothesis theta(13) = 0 is now rejected at a significance level of 7.7 sigma. We also discuss the near future expectation on the precision of the theta(13) determination by using expected data from these ongoing experiments.

Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)

Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)

Fundacao de Amparo a Pesquisa do Estado do Rio de Janeiro (FAPERJ)

Fundacao de Amparo a Pesquisa do Estado do Rio de Janeiro (FAPERJ)

Conselho Nacional de Ciencia e Tecnologia (CNPq)

Conselho Nacional de Ciencia e Tecnologia (CNPq)

European Commission

European Commission [PITN-GA-2009-237920]

KAKENHI

KAKENHI

Japan Society for the Promotion of Science [23540315]

Japan Society for the Promotion of Science (Japan)