New Measurement of Antineutrino Oscillation with the Full Detector Configuration at Daya Bay

doi:10.1103/PhysRevLett.115.111802

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	New Measurement of Antineutrino Oscillation with the Full Detector Configuration at Daya Bay
	Daya Bay Collaboration
	2015
发表期刊	PHYSICAL REVIEW LETTERS
卷号	115 页码:111802
摘要	We report a new measurement of electron antineutrino disappearance using the fully constructed Daya Bay Reactor Neutrino Experiment. The final two of eight antineutrino detectors were installed in the summer of 2012. Including the 404 days of data collected from October 2012 to November 2013 resulted in a total exposure of 6.9 x 10(5) GW(th) ton days, a 3.6 times increase over our previous results. Improvements in energy calibration limited variations between detectors to 0.2%. Removal of six Am-241-C-13 radioactive calibration sources reduced the background by a factor of 2 for the detectors in the experimental hall furthest from the reactors. Direct prediction of the antineutrino signal in the far detectors based on the measurements in the near detectors explicitly minimized the dependence of the measurement on models of reactor antineutrino emission. The uncertainties in our estimates of sin(2)2 theta(13) and vertical bar Delta m(ee)(2)vertical bar were halved as a result of these improvements. An analysis of the relative antineutrino rates and energy spectra between detectors gave sin(2)2 theta(13) = 0.084 +/- 0.005 and vertical bar Delta m(ee)(2)vertical bar = (2.42 +/- 0.11) x 10(-3) eV(2) in the three-neutrino framework.
文章类型	Article
学科领域	Physics
DOI	10.1103/PhysRevLett.115.111802
收录类别	SCI ; EI
WOS类目	Physics, Multidisciplinary
WOS记录号	WOS:000361040800001
引用统计	被引频次：77[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ihep.ac.cn/handle/311005/228737
专题	实验物理中心
推荐引用方式 GB/T 7714	Daya Bay Collaboration. New Measurement of Antineutrino Oscillation with the Full Detector Configuration at Daya Bay[J]. PHYSICAL REVIEW LETTERS,2015,115:111802.
APA	Daya Bay Collaboration.(2015).New Measurement of Antineutrino Oscillation with the Full Detector Configuration at Daya Bay.PHYSICAL REVIEW LETTERS,115,111802.
MLA	Daya Bay Collaboration."New Measurement of Antineutrino Oscillation with the Full Detector Configuration at Daya Bay".PHYSICAL REVIEW LETTERS 115(2015):111802.

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