/ hep-ex arXiv:1310.6732


Spectral measurement of electron antineutrino oscillation amplitude and frequency at Daya Bay


An, F.P. (East China U. Sci. Tech.) ; Balantekin, A.B. (Wisconsin U., Madison) ; Band, H.R. (Wisconsin U., Madison) ; Beriguete, W. (Brookhaven) ; Bishai, M. (Brookhaven) ; Blyth, S. (Natl. United U., Taiwan) ; Brown, R.L. (Brookhaven) ; Butorov, I. (Dubna, JINR) ; Cao, G.F. (Beijing, Inst. High Energy Phys.) ; Cao, J. (Beijing, Inst. High Energy Phys.) ; Carr, R. (Caltech) ; Chan, Y.L. (Hong Kong, Chinese U.) ; Chang, J.F. (Beijing, Inst. High Energy Phys.) ; Chang, Y. (Natl. United U., Taiwan) ; Chasman, C. (Brookhaven) ; Chen, H.S. (Beijing, Inst. High Energy Phys.) ; Chen, H.Y. (Taiwan, Natl. Chiao Tung U.) ; Chen, S.J. (Nanjing U.) ; Chen, S.M. (Tsinghua U., Beijing) ; Chen, X.C. (Hong Kong, Chinese U.) ; Chen, X.H. (Beijing, Inst. High Energy Phys.) ; Chen, Y. (Shenzhen U.) ; Chen, Y.X. (Beijing, North China Elec. Power U.) ; Cheng, Y.P. (Beijing, Inst. High Energy Phys.) ; Cherwinka, J.J. (Wisconsin U., Madison) ; Chu, M.C. (Hong Kong, Chinese U.) ; Cummings, J.P. (Siena Coll., Loudonville) ; de Arcos, J. (IIT, Chicago) ; Deng, Z.Y. (Beijing, Inst. High Energy Phys.) ; Ding, Y.Y. (Beijing, Inst. High Energy Phys.) ; Diwan, M. (Brookhaven) ; Draeger, E. (IIT, Chicago) ; Du, X.F. (Beijing, Inst. High Energy Phys.) ; Dwyer, D.A. (LBL, Berkeley) ; Edwards, W.R. (UC, Berkeley) ; Ely, S.R. (Illinois U., Urbana) ; Fu, J.Y. (Beijing, Inst. High Energy Phys.) ; Ge, L.Q. (Chengdu U. Of Tech.) ; Gill, R. (Brookhaven) ; Gonchar, M. (Dubna, JINR) ; Gong, G.H. (Tsinghua U., Beijing) ; Gong, H. (Tsinghua U., Beijing) ; Gornushkin, Y.A. (Dubna, JINR) ; Gu, W.Q. (Shanghai, Jiao Tong U.) ; Guan, M.Y. (Beijing, Inst. High Energy Phys.) ; Guo, X.H. (Beijing Normal U.) ; Hackenburg, R.W. (Brookhaven) ; Hahn, R.L. (Brookhaven) ; Han, G.H. (William-Mary Coll.) ; Hans, S. (Brookhaven) ; He, M. (Beijing, Inst. High Energy Phys.) ; Heeger, K.M. (Yale U.) ; Heng, Y.K. (Beijing, Inst. High Energy Phys.) ; Hinrichs, P. (Wisconsin U., Madison) ; Hor, J. (Virginia Tech.) ; Hsiung, Y.B. (Taiwan, Natl. Taiwan. U.) ; Hu, B.Z. (Taiwan, Natl. Chiao Tung U.) ; Hu, L.J. (Beijing Normal U.) ; Hu, L.M. (Brookhaven) ; Hu, T. (Beijing, Inst. High Energy Phys.) ; Hu, W. (Beijing, Inst. High Energy Phys.) ; Huang, E.C. (Illinois U., Urbana) ; Huang, H.X. (Beijing, Inst. Atomic Energy) ; Huang, H.Z. (UCLA) ; Huang, X.T. (Shandong U.) ; Huber, P. (Virginia Tech.) ; Hussain, G. (Tsinghua U., Beijing) ; Isvan, Z. (Brookhaven) ; Jaffe, D.E. (Brookhaven) ; Jaffke, P. (Virginia Tech.) ; Jetter, S. (Beijing, Inst. High Energy Phys.) ; Ji, X.L. (Beijing, Inst. High Energy Phys.) ; Ji, X.P. (Nankai U.) ; Jiang, H.J. (Chengdu U. Of Tech.) ; Jiao, J.B. (Shandong U.) ; Johnson, R.A. (Xavier U.) ; Kang, L. (DongGuan U. Technol.) ; Kettell, S.H. (Brookhaven) ; Kramer, M. (UC, Berkeley) ; Kwan, K.K. (Hong Kong, Chinese U.) ; Kwok, M.W. (Hong Kong, Chinese U.) ; Kwok, T. (Hong Kong U.) ; Lai, W.C. (Chengdu U. Of Tech.) ; Lai, W.H. (Taiwan, Natl. Chiao Tung U.) ; Lau, K. (Houston U.) ; Lebanowski, L. (Tsinghua U., Beijing) ; Lee, J. (LBL, Berkeley) ; Lei, R.T. (DongGuan U. Technol.) ; Leitner, R. (Charles U.) ; Leung, A. (Hong Kong U.) ; Leung, J.K.C. (Hong Kong U.) ; Lewis, C.A. (Wisconsin U., Madison) ; Li, D.J. (Hefei, CUST) ; Li, F. (Beijing, Inst. High Energy Phys.) ; Li, G.S. (Shanghai, Jiao Tong U.) ; Li, Q.J. (Beijing, Inst. High Energy Phys.) ; Li, W.D. (Beijing, Inst. High Energy Phys.) ; Li, X.N. (Beijing, Inst. High Energy Phys.) ; Li, X.Q. (Nankai U.) ; Li, Y.F. (Beijing, Inst. High Energy Phys.) ; Li, Z.B. (Zhongshan U.) ; Liang, H. (Hefei, CUST) ; Lin, C.J. (LBL, Berkeley) ; Lin, G.L. (Taiwan, Natl. Chiao Tung U.) ; Lin, S.K. (Houston U.) ; Lin, Y.C. (Chengdu U. Of Tech.) ; Ling, J.J. (Brookhaven) ; Link, J.M. (Virginia Tech.) ; Littenberg, L. (Brookhaven) ; Littlejohn, B. (Xavier U.) ; Liu, D.W. (Houston U.) ; Liu, H. (Houston U.) ; Liu, J.C. (Beijing, Inst. High Energy Phys.) ; Liu, J.L. (Shanghai, Jiao Tong U.) ; Liu, S.S. (Hong Kong U.) ; Liu, Y.B. (Beijing, Inst. High Energy Phys.) ; Lu, C. (Princeton U.) ; Lu, H.Q. (Beijing, Inst. High Energy Phys.) ; Luk, K.B. (UC, Berkeley) ; Ma, Q.M. (Beijing, Inst. High Energy Phys.) ; Ma, X.B. (Beijing, North China Elec. Power U.) ; Ma, X.Y. (Beijing, Inst. High Energy Phys.) ; Ma, Y.Q. (Beijing, Inst. High Energy Phys.) ; McDonald, K.T. (Princeton U.) ; McFarlane, M.C. (Wisconsin U., Madison) ; McKeown, R.D. (William-Mary Coll.) ; Meng, Y. (Virginia Tech.) ; Mitchell, I. (Houston U.) ; Nakajima, Y. (LBL, Berkeley) ; Napolitano, J. (Rensselaer Poly.) ; Naumov, D. (Dubna, JINR) ; Naumova, E. (Dubna, JINR) ; Nemchenok, I. (Dubna, JINR) ; Ngai, H.Y. (Hong Kong U.) ; Ngai, W.K. (Illinois U., Urbana) ; Ning, Z. (Beijing, Inst. High Energy Phys.) ; Ochoa-Ricoux, J.P. (LBL, Berkeley) ; Olshevski, A. (Dubna, JINR) ; Patton, S. (LBL, Berkeley) ; Pec, V. (Charles U.) ; Peng, J.C. (Illinois U., Urbana) ; Piilonen, L.E. (Virginia Tech.) ; Pinsky, L. (Houston U.) ; Pun, C.S.J. (Hong Kong U.) ; Qi, F.Z. (Beijing, Inst. High Energy Phys.) ; Qi, M. (Nanjing U.) ; Qian, X. (Caltech) ; Raper, N. (Rensselaer Poly.) ; Ren, B. (DongGuan U. Technol.) ; Ren, J. (Beijing, Inst. Atomic Energy) ; Rosero, R. (Brookhaven) ; Roskovec, B. (Charles U.) ; Ruan, X.C. (Beijing, Inst. Atomic Energy) ; Shao, B.B. (Tsinghua U., Beijing) ; Steiner, H. (UC, Berkeley) ; Sun, G.X. (Beijing, Inst. High Energy Phys.) ; Sun, J.L. (CGNPC, Shenzhen) ; Tam, Y.H. (Hong Kong, Chinese U.) ; Tanaka, H.K. (Brookhaven) ; Tang, X. (Beijing, Inst. High Energy Phys.) ; Themann, H. (Brookhaven) ; Trentalange, S. (UCLA) ; Tsai, O. (UCLA) ; Tsang, K.V. (LBL, Berkeley) ; Tsang, R.H.M. (Caltech) ; Tull, C.E. (LBL, Berkeley) ; Tung, Y.C. (Taiwan, Natl. Taiwan. U.) ; Viren, B. (Brookhaven) ; Vorobel, V. (Charles U.) ; Wang, C.H. (Natl. United U., Taiwan) ; Wang, L.S. (Beijing, Inst. High Energy Phys.) ; Wang, L.Y. (Beijing, Inst. High Energy Phys.) ; Wang, L.Z. (Beijing, North China Elec. Power U.) ; Wang, M. (Shandong U.) ; Wang, N.Y. (Beijing Normal U.) ; Wang, R.G. (Beijing, Inst. High Energy Phys.) ; Wang, W. (William-Mary Coll.) ; Wang, W.W. (Nanjing U.) ; Wang, Y.F. (Beijing, Inst. High Energy Phys.) ; Wang, Z. (Tsinghua U., Beijing) ; Wang, Z. (Beijing, Inst. High Energy Phys.) ; Wang, Z.M. (Beijing, Inst. High Energy Phys.) ; Webber, D.M. (Wisconsin U., Madison) ; Wei, H.Y. (Tsinghua U., Beijing) ; Wei, Y.D. (DongGuan U. Technol.) ; Wen, L.J. (Beijing, Inst. High Energy Phys.) ; Whisnant, K. (Iowa State U.) ; White, C.G. (IIT, Chicago) ; Whitehead, L. (Houston U.) ; Wise, T.S. (Wisconsin U., Madison) ; Wong, H.L.H. (UC, Berkeley) ; Wong, S.C.F. (Hong Kong, Chinese U.) ; Worcester, E. (Brookhaven) ; Wu, Q. (Shandong U.) ; Xia, D.M. (Beijing, Inst. High Energy Phys.) ; Xia, J.K. (Beijing, Inst. High Energy Phys.) ; Xia, X. (Shandong U.) ; Xing, Z.Z. (Beijing, Inst. High Energy Phys.) ; Xu, J. (Beijing Normal U.) ; Xu, J.L. (Beijing, Inst. High Energy Phys.) ; Xu, J.Y. (Hong Kong, Chinese U.) ; Xu, Y. (Nankai U.) ; Xue, T. (Tsinghua U., Beijing) ; Yan, J. (Xian Jiaotong U.) ; Yang, C.G. (Beijing, Inst. High Energy Phys.) ; Yang, L. (DongGuan U. Technol.) ; Yang, M.S. (Beijing, Inst. High Energy Phys.) ; Ye, M. (Beijing, Inst. High Energy Phys.) ; Yeh, M.F. (Brookhaven) ; Yeh, Y.S. (Taiwan, Natl. Chiao Tung U.) ; Young, B.L. (Iowa State U.) ; Yu, G.Y. (Nanjing U.) ; Yu, J.Y. (Tsinghua U., Beijing) ; Yu, Z.Y. (Beijing, Inst. High Energy Phys.) ; Zang, S.L. (Nanjing U.) ; Zhan, L. (Beijing, Inst. High Energy Phys.) ; Zhang, C. (Brookhaven) ; Zhang, F.H. (Beijing, Inst. High Energy Phys.) ; Zhang, J.W. (Beijing, Inst. High Energy Phys.) ; Zhang, Q.M. (Xian Jiaotong U.) ; Zhang, S.H. (Beijing, Inst. High Energy Phys.) ; Zhang, Y.C. (Hefei, CUST) ; Zhang, Y.H. (Beijing, Inst. High Energy Phys.) ; Zhang, Y.M. (Tsinghua U., Beijing) ; Zhang, Y.X. (CGNPC, Shenzhen) ; Zhang, Z.J. (DongGuan U. Technol.) ; Zhang, Z.P. (Hefei, CUST) ; Zhang, Z.Y. (Beijing, Inst. High Energy Phys.) ; Zhao, J. (Beijing, Inst. High Energy Phys.) ; Zhao, Q.W. (Beijing, Inst. High Energy Phys.) ; Zhao, Y.B. (Beijing, Inst. High Energy Phys.) ; Zheng, L. (Hefei, CUST) ; Zhong, W.L. (Beijing, Inst. High Energy Phys.) ; Zhou, L. (Beijing, Inst. High Energy Phys.) ; Zhou, Z.Y. (Beijing, Inst. Atomic Energy) ; Zhuang, H.L. (Beijing, Inst. High Energy Phys.) ; Zou, J.H. (Beijing, Inst. High Energy Phys.) ; Following a special calibration campaign in summer

Abstract: A measurement of the energy dependence of antineutrino disappearance at the Daya Bay Reactor Neutrino Experiment is reported. Electron antineutrinos ($\overline{\nu}_{e}$) from six $2.9$ GW$_{\rm th}$ reactors were detected with six detectors deployed in two near (effective baselines 512 m and 561 m) and one far (1579 m) underground experimental halls. Using 217 days of data, 41589 (203809 and 92912) antineutrino candidates were detected in the far hall (near halls). An improved measurement of the oscillation amplitude $\sin^{2}2\theta_{13} = 0.090^{+0.008}_{-0.009} $ and the first direct measurement of the $\overline{\nu}_{e}$ mass-squared difference $|\Delta m^{2}_{ee}|= (2.59_{-0.20}^{+0.19}) \times 10^{-3}\ {\rm eV}^2 $ is obtained using the observed $\overline{\nu}_{e}$ rates and energy spectra in a three-neutrino framework. This value of $|\Delta m^{2}_{ee}|$ is consistent with $|\Delta m^{2}_{\mu\mu}|$ measured by muon neutrino disappearance, supporting the three-flavor oscillation model.

Web-Page: http://inspirehep.net/record/1261972/files/Fig1_energy_response_plot_v3.png; http://inspirehep.net/record/1261972/files/Fig2_ratio_all.png; http://inspirehep.net/record/1261972/files/Fig3_farNearAllowedOscillation_wPanels_v8_sigLines.png; http://inspirehep.net/record/1261972/files/Fig4_loe_figure_final_2.png; http://inspirehep.net/record/1261972/files/arXiv:1310.6732.pdf


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