Progress on the neutrino mixing angle, theta_13

Details Progress on the neutrino mixing angle, theta_13 Progress on the neutrino mixing angle, theta_13

2011-11-10

arxiv.org/abs/1111.2397v1

Physics

High Energy Physics

High Energy Physics - Experiment

Invited talk at the XXXI PHYSICS IN COLLISION, Vancouver, BC Canada, September 2011

Scientific paper

Until recently, measurements of theta_13, which describes the nu_e component in the nu_3 mass eigenstate, gave only upper limits, leaving open the possibility that it is zero and eliminating a source of CP violation in the neutrino sector. This year has seen significant advances in measuring theta_13 as precision reactor experiments move from construction phase to physics operation and accelerator experiments give first indications that theta_13 differs from zero. In the years to come, the results from these and other experiments will stringently test the PMNS framework for neutrino oscillation and will start to give information about neutrino CP violation and the neutrino mass hierarchy. This paper summarizes the situation for measuring theta_13 at this pivotal time in neutrino research.

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