Speaker
Description
The Daya Bay Reactor Neutrino Experiment discovered a non-zero value
for the neutrino mixing angle 𝜃13 in 2012. Since then, Daya Bay
continues to provide leading determination of this small mixing angle. This
is accomplished by comparing the measured rate and energy spectrum of
electron antineutrinos coming from three pairs of reactors between multiple
identical-designed detectors installed in three underground experimental
halls located at different distances from the reactors. After a total of about
nine years of operation, Daya Bay has amassed a record-breaking number
of electron antineutrino events via their inverse beta-decay (IBD) interactions
in the gadolinium-doped liquid scintillator inside the detectors. Based on about
5.6 million IBD candidates with the final-state neutron captured on gadolinium
obtained from the full data set, Daya Bay has further improved the precision
of determining 𝜃13 and the mass-square difference
Δm232. These latest results will be presented.
