Implications of the Daya Bay reactor neutrino experiment

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Date/Time:Wednesday, 12 Sep 2012 from 4:10 pm to 5:10 pm
Location:A401, Zaffarano Hall
Contact:Chunhui Chen
Phone:515-294-5062
Channel:High Energy Physics
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Professor Kerry Whisnant, Iowa State University

The standard three-neutrino model has three mixing angles, three masses, and a CP-violating phase. Two mixing angles and two mass-squared differences have been well-measured by experiments that detect solar, atmospheric, reactor and accelerator neutrinos. A nonzero value of the third mixing angle is essential for detecting leptonic CP violation and determining the ordering of the neutrino masses. Until recently there was only an upper bound on the third mixing angle, but short-baseline reactor experiments, including the one at Daya Bay, have now established that it is nonzero at better than 7-sigma. The theoretical implications of these measurements will be discussed.