Spectral Measurement of Electron Antineutrino Oscillation Amplitude and Frequency at Daya Bay

	Spectral Measurement of Electron Antineutrino Oscillation Amplitude and Frequency at Daya Bay
	Daya Bay Collaboration
刊名	PHYSICAL REVIEW LETTERS
	2014
卷号	112 期号:6
关键词	NEUTRON FISSION-PRODUCTS PU-239 DECAY LI-9
通讯作者	An, FP (reprint author), Inst High Energy Phys, Beijing 100039, Peoples R China.
英文摘要	A measurement of the energy dependence of antineutrino disappearance at the Daya Bay reactor neutrino experiment is reported. Electron antineutrinos ((v) over bar (e)) from six 2.9 GW(th) reactors were detected with six detectors deployed in two near (effective baselines 512 and 561 m) and one far (1579 m) underground experimental halls. Using 217 days of data, 41 589 (203 809 and 92 912) antineutrino candidates were detected in the far hall (near halls). An improved measurement of the oscillation amplitude sin(2) 2 theta(13) = 0.090(-0.009)(+0.008) and the first direct measurement of the (v) over bar (e) mass-squared difference vertical bar Delta m(ee)(2)vertical bar = (2.59(-0.20)(+0.19) x 10(-3) eV(2)) is obtained using the observed (v) over bar (e) rates and energy spectra in a three-neutrino framework. This value of vertical bar Delta m(ee)(2)vertical bar eejis consistent with vertical bar Delta m(mu mu)(2)vertical bar measured by muon neutrino disappearance, supporting the three-flavor oscillation model.
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
收录类别	SCI
语种	英语
WOS记录号	WOS:000331951000002
公开日期	2016-02-26
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/213665]
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. Spectral Measurement of Electron Antineutrino Oscillation Amplitude and Frequency at Daya Bay[J]. PHYSICAL REVIEW LETTERS,2014,112(6).
APA	Daya Bay Collaboration.(2014).Spectral Measurement of Electron Antineutrino Oscillation Amplitude and Frequency at Daya Bay.PHYSICAL REVIEW LETTERS,112(6).
MLA	Daya Bay Collaboration."Spectral Measurement of Electron Antineutrino Oscillation Amplitude and Frequency at Daya Bay".PHYSICAL REVIEW LETTERS 112.6(2014).