期刊
PHYSICAL REVIEW D
卷 98, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.98.012002
关键词
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资金
- National Research Foundation of Korea (NRF) - Korea Ministry of Science and ICT [20090083526]
- BK21 of NRF
The Reactor Experiment for Neutrino Oscillation (RENO) has been taking electron antineutrino ((nu) over bar (e)) data from the reactors in Yonggwang, Korea, using two identical detectors since August 2011. Using roughly 500 live days of data through January 2013 we observe 290 775 (31 514) reactor (nu) over bar (e) candidate events with 2.8% (4.9%) background in the near (far) detector. The observed visible positron spectra from the reactor (nu) over bar (e) events in both detectors show a discrepancy around 5 MeV with regard to the prediction from the current reactor (nu) over bar (e) model. Based on a far-to-near ratio measurement using the spectral and rate information, we have obtained sin(2)2 theta(13) = 0.082 +/- 0.009(stat.) +/- 0.006(syst.) and vertical bar Delta m(ee)(2)vertical bar = 2.62(-0.23)(+0.21) (stat.)(+0.12)(-0.13)(syst.)] x 10(-3) eV(2).
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