Recent Results From The Daya Bay Experiment

Abstract

The Daya Bay reactor neutrino experiment has observed the disappearance of electron antineutrinos from nuclear reactors at $\sim$kilometer baselines. The relative measurement of the ${\bar{\nu }}_e$ rate and spectrum between near and far detectors allows for a precision measurement of the oscillation parameters ${\sin }^{2}2{\theta }_{13}$ and $|\Delta m_{ee}^2|$. Two new antineutrino detectors (ADs) were installed in summer 2012, bringing the experiment to the final 8-AD configuration. With 621 days of data, Daya Bay has measured ${\sin }^{2}2{\theta }_{13}=0.084\pm 0.005$ and $|\Delta m_{ee}^2|=2.44_{-0.11}^{+0.10}\times 10^{-3}$ eV${}^2$. This is the most precise measurement of ${\sin }^{2}2{\theta }_{13}$ to date and the most precise measurement of $|\Delta m_{ee}^2|$ in this channel. Several other analyses are also performed, including an independent measurement of ${\sin }^{2}2{\theta }_{13}$ using ${\bar{\nu }}_e$ samples tagged by neutron capture on hydrogen, a search for light sterile neutrinos, and a measurement of the absolute reactor antineutrino flux.

7 pages, 4 figures, to appear in the proceedings of NEUTRINO 2014, 26th International Conference on Neutrino Physics and Astrophysics, 2 - 7 June 2014, held at Boston, Massachusetts, USA

References in corpus (1)

• Independent Measurement of Theta13 via Neutron Capture on Hydrogen at Daya Bay

Cited by in corpus (7)

• Neutrino Mass Hierarchy
• Neutrino Oscillation Studies with Reactors
• Precise Determination of the U-235 Reactor Antineutrino Cross Section per Fission
• Reason for T2K to run in dominant neutrino mode for detecting CP violation
• The Intermediate Neutrino Program
• Revisiting T2KK and T2KO physics potential and ${\nu }_{\mu }$ - ${\bar{\nu }}_{\mu }$ beam ratio
• Data processing and storage in the Daya Bay Reactor Antineutrino Experiment