Reactor Antineutrino Anomaly with known $\theta_{13}$
ORAL
Abstract
We revisit the reactor antineutrino anomaly using the recent reactor flux independent determination of sizable $\theta_{13}$ by considering the full set of the absolute reactor $\bar{\nu}_e$ flux measurements. When normalized to the predicted flux of Mueller et al. [Phys. Rev. C 83, 054615 (2011)], the new world average, after including results from Palo Verde, Chooz, and Double Chooz, is 0.959 $\pm$ 0.009 (experiment uncertainty) $\pm$ 0.027 (flux systematics). Including the data with kilometer baseline, the new world average is only about 1.4$\sigma$ lower than the unity, weakening the significance of the reactor antineutrino anomaly. The upcoming results from Daya Bay, RENO, and the Double Chooz will provide further information about this issue.
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Authors
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Chao Zhang
Brookhaven National Lab