Recent Results from Daya Bay

分类： 物理学 >> 核物理学 提交时间： 2016-09-10

Zhan, Liang

摘要： The Daya Bay reactor neutrino experiment observed electron antineutrino disappearance associated with θ13 with a significance better than 5σ in 2012. The final two of eight antineutrino detectors were installed in the summer of 2012. Including the 404 days of data collected with the full detector configuration resulted in a 3.6 times increase of statistics over the previous result with the 6-AD configuration. With improvements of the systematic uncertainties and better estimation of backgrounds, Daya Bay has measured sin22θ13=0.084±0.005 and |Δm2ee|=2.42+0.10−0.11×10−3~eV2. This is the most precise measurement of sin22θ13 to date and the most precise measurement of of |Δm2ee| via electron antineutrino disappearance. Several other analysis results are presented, including an independent measurement of θ13 using inverse-beta decays associated with neutron capture on hydrogen, a measurement of reactor antineutrino flux and spectrum, and a search for light sterile neutrino mixing.

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