Measurement of Reactor Antineutrino Oscillation Amplitude and Frequency at RENO

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Title
Measurement of Reactor Antineutrino Oscillation Amplitude and Frequency at RENO
Author(s)
Bak, G; Choi, JH; Jang, HI; Jang, JS; Jeon, SH; Joo, KK; Ju, K; Jung, DE; Kim, JG; Kim, JH; Kim, JY; Kim, SB; Kim, SY; Kim, W; Kwon, E; Lee, DH; Lee, HG; Lee, YC; Lim, IT; Moon, DH; Pac, MY; Park, YS; Rott, C; Seo, H; Seo, JW; Seo, SH; Shin, CD; Yang, JY; Yoo, J; Yu, I
Publication Date
2018-11
Journal
PHYSICAL REVIEW LETTERS, v.121, no.20, pp.201801 -
Publisher
AMER PHYSICAL SOC
Abstract
The RENO experiment reports more precisely measured values of theta(13) and vertical bar Delta m(ee)(2)vertical bar using similar to 2200 live days of data. The amplitude and frequency of reactor electron antineutrino ((nu) over bar (e)) oscillation are measured by comparing the prompt signal spectra obtained from two identical near and far detectors. In the period between August 2011 and February 2018, the far (near) detector observed 103 212 (850 666) (nu) over bar (e) candidate events with a background fraction of 4.8% (2.0%). A clear energy and baseline dependent disappearance of reactor (nu) over bar (e) is observed in the deficit of the measured number of (nu) over bar (e). Based on the measured far-to-near ratio of prompt spectra, we obtain sin(2)2 theta(13) = 0.0896 +/- 0.0048(stat) +/- 0.0047(syst) and vertical bar Delta m(ee)(2)vertical bar = [2.68 +/- 0.12(stat) +/- 0.07(syst)] x 10(-3) eV(2) Published by the American Physical Society
URI
https://pr.ibs.re.kr/handle/8788114/5772
ISSN
0031-9007
Appears in Collections:
Center for Axion and Precision Physics Research(액시온 및 극한상호작용 연구단) > Journal Papers (저널논문)
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