Details

Autor(en) / Beteiligte

• Adey, D
• An, F P
• Balantekin, A B
• Band, H R
• Bishai, M
• Blyth, S
• Cao, D
• Cao, G F
• Cao, J
• Chan, Y L
• Chang, J F
• Chang, Y
• Chen, H S
• Chen, S M
• Chen, Y
• Chen, Y X
• Cheng, J
• Cheng, Z K
• Cherwinka, J J
• Chu, M C
• Chukanov, A
• Cummings, J P
• Deng, F S
• Ding, Y Y
• Diwan, M V
• Dolgareva, M
• Dwyer, D A
• Edwards, W R
• Gonchar, M
• Gong, G H
• Gong, H
• Gu, W Q
• Guo, L
• Guo, X H
• Guo, Y H
• Guo, Z
• Hackenburg, R W
• Hans, S
• He, M
• Heeger, K M
• Heng, Y K
• Higuera, A
• Hsiung, Y B
• Hu, B Z
• Hu, J R
• Hu, T
• Hu, Z J
• Huang, H X
• Huang, X T
• Huang, Y B
• Huber, P
• Huo, W
• Hussain, G
• Jaffe, D E
• Jen, K L
• Ji, X L
• Ji, X P
• Johnson, R A
• Jones, D
• Kang, L
• Kettell, S H
• Koerner, L W
• Kohn, S
• Kramer, M
• Langford, T J
• Lebanowski, L
• Lee, J
• Lee, J H C
• Lei, R T
• Leitner, R
• Leung, J K C
• Li, C
• Li, F
• Li, H L
• Li, Q J
• Li, S
• Li, S C
• Li, S J
• Li, W D
• Li, X N
• Li, X Q
• Li, Y F
• Li, Z B
• Liang, H
• Lin, C J
• Lin, G L
• Lin, S
• Lin, S K
• Lin, Y-C
• Ling, J J
• Link, J M
• Littenberg, L
• Littlejohn, B R
• Liu, J C
• Liu, J L
• Liu, Y
• Liu, Y H
• Loh, C W
• Lu, C
• Lu, H Q

Titel

Measurement of the Electron Antineutrino Oscillation with 1958 Days of Operation at Daya Bay

Ist Teil von

• Physical review letters, 2018-12, Vol.121 (24), p.241805-241805, Article 241805

Ort / Verlag

United States: American Physical Society

Erscheinungsjahr

2018

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• We report a measurement of electron antineutrino oscillation from the Daya Bay Reactor Neutrino Experiment with nearly 4 million reactor ν[over ¯]_{e} inverse β decay candidates observed over 1958 days of data collection. The installation of a flash analog-to-digital converter readout system and a special calibration campaign using different source enclosures reduce uncertainties in the absolute energy calibration to less than 0.5% for visible energies larger than 2 MeV. The uncertainty in the cosmogenic ^{9}Li and ^{8}He background is reduced from 45% to 30% in the near detectors. A detailed investigation of the spent nuclear fuel history improves its uncertainty from 100% to 30%. Analysis of the relative ν[over ¯]_{e} rates and energy spectra among detectors yields sin^{2}2θ_{13}=0.0856±0.0029 and Δm_{32}^{2}=(2.471_{-0.070}^{+0.068})×10^{-3}  eV^{2} assuming the normal hierarchy, and Δm_{32}^{2}=-(2.575_{-0.070}^{+0.068})×10^{-3}  eV^{2} assuming the inverted hierarchy.