Measurement of reactor antineutrino flux and spectrum at RENO

被引：12

作者：

Yoon, S. G. ^{[1
]}

Seo, H. ^{[2
]}

Atif, Z. ^{[3
]}

Choi, J. H. ^{[4
]}

Jang, H. I. ^{[5
]}

Jang, J. S. ^{[6
]}

Jeon, S. H. ^{[7
]}

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

Ju, K. ^{[1
]}

Jung, D. E. ^{[7
]}

Kim, J. G. ^{[7
]}

Kim, J. H. ^{[7
]}

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

Kim, S. B. ^{[7
]}

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

Kim, W. ^{[8
]}

Kwon, E. ^{[7
]}

Lee, D. H. ^{[7
]}

Lee, H. G. ^{[2
]}

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

Moon, D. H. ^{[3
]}

Pac, M. Y. ^{[4
]}

Seo, J. W.

Shin, C. D.

Yang, B. S. ^{[2
]}

Yoo, J. ^{[2
]}

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

Yu, I. ^{[7
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Phys, Daejeon 34141, South Korea

[2] Seoul Natl Univ, Dept Phys & Astron, Seoul 08826, South Korea

[3] Chonnam Natl Univ, Inst Univ & Elementary Particles, Gwangju 61186, South Korea

[4] Dongshin Univ, Inst High Energy Phys, Naju 58245, South Korea

[5] Seoyeong Univ, Dept Fire Safety, Gwangju 61268, South Korea

[6] Gwangju Inst Sci & Technol, GIST Coll, Gwangju 61005, South Korea

[7] Sungkyunkwan Univ, Dept Phys, Suwon 16419, South Korea

[8] Kyungpook Natl Univ, Dept Phys, Daegu 41566, South Korea

来源：

PHYSICAL REVIEW D | 2021年 / 104卷 / 11期

基金：

新加坡国家研究基金会;

关键词：

D O I：

10.1103/PhysRevD.104.L111301

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The RENO experiment reports measured flux and energy spectrum of reactor electron antineutrinos nu over bar e from the six reactors at Hanbit Nuclear Power Plant. The measurements use 966 094 116 111 nu over bar e candidate events with a background fraction of 2.39% (5.13%), acquired in the near (far) detector, from August 2011 to March 2020. The inverse beta decay (IBD) yield is measured as o5.852 1 0.094 thorn x 10-43 cm2/fission, corresponding to 0.941 10.015 of the prediction by the Huber and Mueller (HM) model. A reactor nu over bar e spectrum is obtained by unfolding a measured IBD prompt spectrum. The obtained neutrino spectrum shows a clear excess around 6 MeV relative to the HM prediction. The obtained reactor nu over bar e spectrum will be useful for understanding unknown neutrino properties and reactor models. The observed discrepancies suggest the next round of precision measurements and modification of the current reactor nu over bar e models.

引用

页数：6

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