Improved measurement of electron antineutrino disappearance at Daya Bay

	Improved measurement of electron antineutrino disappearance at Daya Bay
	Daya Bay Collaboration
刊名	CHINESE PHYSICS C
	2013
卷号	37 期号:1
关键词	LOADED LIQUID SCINTILLATOR REACTOR NEUTRINO EXPERIMENT THETA(13) SPECTRA
通讯作者	An, FP (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
英文摘要	We report an improved measurement of the neutrino mixing angle theta(13) from the Daya Bay Reactor Neutrino Experiment. We exclude a zero value for sin(2)2 theta(13) with a significance of 7.7 standard deviations. Electron antineutrinos from six reactors of 2.9 GW(th) were detected in six antineutrino detectors deployed in two near (flux-weighted baselines of 470 m and 576 m) and one far (1648 m) underground experimental halls. Using 139 days of data, 28909 (205308) electron antineutrino candidates were detected at the far hall (near halls). The ratio of the observed to the expected number of antineutrinos assuming no oscillations at the far hall is 0.944 +/- 0.007(stat.)+/- 0.003(syst.). An analysis of the relative rates in six detectors finds sin(2)2 theta(13)= 0.089 +/- 0.010(stat.)+/- 0.005(syst.) in a three-neutrino framework.
学科主题	Physics
类目[WOS]	Physics, Nuclear ; Physics, Particles & Fields
收录类别	SCI
语种	英语
WOS记录号	WOS:000314891200001
公开日期	2016-02-26
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/213458]
专题	高能物理研究所_实验物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Daya Bay Collaboration. Improved measurement of electron antineutrino disappearance at Daya Bay[J]. CHINESE PHYSICS C,2013,37(1).
APA	Daya Bay Collaboration.(2013).Improved measurement of electron antineutrino disappearance at Daya Bay.CHINESE PHYSICS C,37(1).
MLA	Daya Bay Collaboration."Improved measurement of electron antineutrino disappearance at Daya Bay".CHINESE PHYSICS C 37.1(2013).