Recent Results from the Daya Bay Neutrino Experiment

Abstract

The Daya Bay neutrino experiment has recently updated the oscillation analysis results with 621 days of data in 2015, which has 3.6 times more statistics than the previous publication in 2014. The relative $\bar{\nu}_{e}$ rate and spectrum measurement between the near and far detectors yielded the best fit values of $\sin^{2}2\theta_{13}$ = 0.084 $\pm$ 0.005 and $|\Delta{}m_{ee}^{2}|$ = (2.42 $\pm$ 0.11) $\times$ 10$^{-3}$ eV$^{2}$. This is currently the most precise measurement of $\sin^{2}2\theta_{13}$ in the world. The measurement of $|\Delta{}m_{ee}^{2}|$ also has a precision that is comparable to the measurements from MINOS and T2K experiments in 2014. Daya Bay also performed several other analyses such as the search for the light sterile neutrino in the 3+1 neutrino framework, and the measurements of the absolute reactor anti-neutrino flux and spectrum.