Observation of Reactor Electron Antineutrinos Disappearance in the RENO Experiment

被引：1490

作者：

Ahn, J. K. ^{[1
]}

Chebotaryov, S. ^{[7
]}

Choi, J. H. ^{[5
]}

Choi, S. ^{[10
]}

Choi, W. ^{[10
]}

Choi, Y. ^{[12
]}

Jang, H. I. ^{[11
]}

Jang, J. S. ^{[3
]}

Jeon, E. J. ^{[8
]}

Jeong, I. S. ^{[3
]}

Joo, K. K. ^{[3
]}

Kim, B. R. ^{[3
]}

Kim, B. C. ^{[3
]}

Kim, H. S. ^{[2
]}

Kim, J. Y. ^{[3
]}

Kim, S. B. ^{[10
]}

Kim, S. H. ^{[1
]}

Kim, S. Y. ^{[1
]}

Kim, W. ^{[7
]}

Kim, Y. D. ^{[8
]}

Lee, J. ^{[10
]}

Lee, J. K. ^{[1
]}

Lim, I. T. ^{[3
]}

Ma, K. J. ^{[8
]}

Pac, M. Y. ^{[5
]}

Park, I. G. ^{[6
]}

Park, J. S. ^{[10
]}

Park, K. S. ^{[9
]}

Shin, J. W. ^{[10
]}

Siyeon, K. ^{[4
]}

Yang, B. S. ^{[10
]}

Yeo, I. S. ^{[3
]}

Yi, S. H. ^{[12
]}

Yu, I. ^{[12
]}

机构：

[1] Pusan Natl Univ, Dept Phys, Pusan 609735, South Korea

[2] Chonbuk Natl Univ, Dept Phys, Jeonju 561756, South Korea

[3] Chonnam Natl Univ, Dept Phys, Kwangju 500757, South Korea

[4] Chung Ang Univ, Dept Phys, Seoul 156756, South Korea

[5] Dongshin Univ, Dept Radiol, Naju 520714, South Korea

[6] Gyeongsang Natl Univ, Dept Phys, Jinju 660701, South Korea

[7] Kyungpook Natl Univ, Dept Phys, Taegu 702701, South Korea

[8] Sejong Univ, Dept Phys, Seoul 143747, South Korea

[9] Seokyeong Univ, Div Gen Educ, Seoul 136704, South Korea

[10] Seoul Natl Univ, Dept Phys & Astron, Seoul 151742, South Korea

[11] Seoyeong Univ, Dept Fire Safety, Kwangju 500742, South Korea

[12] Sungkyunkwan Univ, Dept Phys, Suwon 440746, South Korea

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 19期

基金：

新加坡国家研究基金会;

关键词：

NEUTRON FISSION-PRODUCTS; LONG-BASE-LINE; SEARCH; OSCILLATIONS; SPECTRA; PU-239; ENERGY;

D O I：

10.1103/PhysRevLett.108.191802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The RENO experiment has observed the disappearance of reactor electron antineutrinos, consistent with neutrino oscillations, with a significance of 4.9 standard deviations. Antineutrinos from six 2.8 GW(th) reactors at the Yonggwang Nuclear Power Plant in Korea, are detected by two identical detectors located at 294 and 1383 m, respectively, from the reactor array center. In the 229 d data-taking period between 11 August 2011 and 26 March 2012, the far (near) detector observed 17102 (154088) electron antineutrino candidate events with a background fraction of 5.5% (2.7%). The ratio of observed to expected numbers of antineutrinos in the far detector is 0.920 +/- 0.009(stat) +/- 0.014(syst). From this deficit, we determine sin(2)2 theta(13) = 0.113 +/- 0.013(stat) +/- 0.019(syst) based on a rate-only analysis.

引用

页数：6

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