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Recent Results From The Daya Bay Experiment

High Energy Physics - Experiment 2016-07-26 v1 Instrumentation and Detectors

Abstract

The Daya Bay reactor neutrino experiment has observed the disappearance of electron antineutrinos from nuclear reactors at \simkilometer baselines. The relative measurement of the νˉe\bar\nu_e rate and spectrum between near and far detectors allows for a precision measurement of the oscillation parameters sin22θ13\sin^22\theta_{13} and Δmee2|\Delta{m}^2_{ee}|. 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 sin22θ13=0.084±0.005\sin^22\theta_{13} = 0.084 \pm 0.005 and Δmee2=2.440.11+0.10×103|\Delta{m}^2_{ee}| = 2.44^{+0.10}_{-0.11} \times 10^{-3} eV2^2. This is the most precise measurement of sin22θ13\sin^22\theta_{13} to date and the most precise measurement of Δmee2|\Delta{m}^2_{ee}| in this channel. Several other analyses are also performed, including an independent measurement of sin22θ13\sin^22\theta_{13} using νˉe\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.

Keywords

Cite

@article{arxiv.1501.04991,
  title  = {Recent Results From The Daya Bay Experiment},
  author = {Chao Zhang},
  journal= {arXiv preprint arXiv:1501.04991},
  year   = {2016}
}

Comments

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

R2 v1 2026-06-22T08:07:46.998Z