Details

Autor(en) / Beteiligte

• An, F. P.
• Balantekin, A. B.
• Bishai, M.
• Blyth, S.
• Cao, J.
• Chang, J. F.
• Chang, L. C.
• Chang, Y.
• Chen, H. S.
• Chen, Y. X.
• Chen, Y.
• Cheng, J.
• Cheng, Z. K.
• Cherwinka, J. J.
• Chu, M. C.
• de Arcos, J.
• Deng, Z. Y.
• Ding, X. F.
• Ding, Y. Y.
• Diwan, M. V.
• Dolgareva, M.
• Edwards, W. R.
• Gong, G. H.
• Gong, H.
• Grassi, M.
• Guo, L.
• Hackenburg, R. W.
• Hsiung, Y. B.
• Hu, B. Z.
• Huang, E. C.
• Huang, X. T.
• Huber, P.
• Ji, X. P.
• Kohn, S.
• Kwok, T.
• Langford, T. J.
• Lei, R. T.
• Li, D. J.
• Li, F.
• Li, G. S.
• Li, S.
• Li, W. D.
• Li, X. N.
• Li, Y. F.
• Li, Z. B.
• Lin, C. J.
• Lin, Y.-C.
• Link, J. M.
• Liu, D. W.
• Liu, J. C.
• Loh, C. W.
• Lu, H. Q.
• Luk, K. B.
• Ma, X. Y.
• Ma, X. B.
• Malyshkin, Y.
• Mooney, M.
• Nakajima, Y.
• Napolitano, J.
• Naumova, E.
• Ngai, H. Y.
• Pan, H.-R.
• Park, J.
• Qian, X.
• Rosero, R.
• Roskovec, B.
• Sun, G. X.
• Tsang, K. V.
• Viaux, N.
• Viren, B.
• Vorobel, V.
• Wang, M.
• Wang, N. Y.
• Wang, R. G.
• Wang, W.
• Wang, Y. F.
• Wang, Z. M.
• Wei, H. Y.
• Wen, L. J.
• White, C. G.
• Whitehead, L.
• Wong, H. L. H.
• Wong, S. C. F.
• Wu, C.-H.
• Wu, W. J.
• Xia, D. M.
• Xia, J. K.
• Xu, Y.
• Ye, M.
• Young, B. L.
• Zhang, C.
• Zhang, H. H.
• Zhang, X. T.
• Zhang, Y. M.
• Zhang, Y. X.
• Zhao, Q. W.
• Zhao, Y. B.
• Zhong, W. L.
• Zhou, N.
• Zou, J. H.

Titel

Measurement of electron antineutrino oscillation based on 1230 days of operation of the Daya Bay experiment

Ist Teil von

• Physical review. D, 2017-04, Vol.95 (7), Article 072006

Ort / Verlag

College Park: American Physical Society

Erscheinungsjahr

2017

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A measurement of electron antineutrino oscillation by the Daya Bay Reactor Neutrino Experiment is described in detail. Six 2.9-GWth nuclear power reactors of the Daya Bay and Ling Ao nuclear power facilities served as intense sources of ν¯e’s. Comparison of the ν¯e rate and energy spectrum measured by antineutrino detectors far from the nuclear reactors (∼1500–1950 m) relative to detectors near the reactors (∼350–600 m) allowed a precise measurement of ν¯e disappearance. More than 2.5 million ν¯e inverse beta-decay interactions were observed, based on the combination of 217 days of operation of six antineutrino detectors (December, 2011–July, 2012) with a subsequent 1013 days using the complete configuration of eight detectors (October, 2012–July, 2015). The ν¯e rate observed at the far detectors relative to the near detectors showed a significant deficit, R=0.949±0.002(stat)±0.002(syst). The energy dependence of ν¯e disappearance showed the distinct variation predicted by neutrino oscillation. Analysis using an approximation for the three-flavor oscillation probability yielded the flavor-mixing angle sin22θ13=0.0841±0.0027(stat)±0.0019(syst) and the effective neutrino mass-squared difference of |Δmee2|=(2.50±0.06(stat)±0.06(syst))×10−3 eV2. Analysis using the exact three-flavor probability found Δm322=(2.45±0.06(stat)±0.06(syst))×10−3 eV2 assuming the normal neutrino mass hierarchy and Δm322=(−2.56±0.06(stat)±0.06(syst))×10−3 eV2 for the inverted hierarchy.