Measurement of Electron Antineutrino Oscillation Amplitude and Frequency via Neutron Capture on Hydrogen at Daya Bay

This Letter reports the first measurement of the oscillation amplitude and frequency of reactor antineutrinos at Daya Bay via neutron capture on hydrogen using 1958 days of data. With over 3.6 million signal candidates, an optimized candidate selection, improved treatment of backgrounds and efficiencies, refined energy calibration, and an energy response model for the capture-on-hydrogen sensitive region, the relative ν[over ¯]_{e} rates and energy spectra variation among the near and far detectors gives sin^{2}2θ_{13}=0.0759_{-0.0049}^{+0.0050} and Δm_{32}^{2}=(2.72_{-0.15}^{+0.14})×10^{-3} eV^{2} assuming the normal neutrino mass ordering, and Δm_{32}^{2}=(-2.83_{-0.14}^{+0.15})×10^{-3} eV^{2} for the inverted neutrino mass ordering. This estimate of sin^{2}2θ_{13} is consistent with and essentially independent from the one obtained using the capture-on-gadolinium sample at Daya Bay. The combination of these two results yields sin^{2}2θ_{13}=0.0833±0.0022, which represents an 8% relative improvement in precision regarding the Daya Bay full 3158-day capture-on-gadolinium result.

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Journal
Physical Review Letters
Published
2024-10-08
DOI
https://doi.org/10.1103/physrevlett.133.151801
Citations
3
Primary Topic
Neutrino Physics Research
Type
article
Field-Weighted Citation Impact
1.98

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article

Measurement of Electron Antineutrino Oscillation Amplitude and Frequency via Neutron Capture on Hydrogen at Daya Bay

N. Raper, H. Y. Duyang, K. Treskov, X. T. Zhang et al.
3 citations
Physical Review Letters
Neutrino Physics Research
1.98
article

Measurement of Electron Antineutrino Oscillation Amplitude and Frequency via Neutron Capture on Hydrogen at Daya Bay

N. Raper, H. Y. Duyang, K. Treskov, X. T. Zhang, M. Yeh, Kang Li, H. K. Xu, J. C. Liu, Katherine Dugas, Jun Cao, S. H. Kettell, S. Lin, R. Rosero, X. Ji, Liangjian Wen, J. X. Liu, X. T. Huang, Tomáš Tměj, Y. C. Tung, H. Q. Lu, Z. Y. Yu, J. P. Gallo, M. Wang, F. P. An, J. C. Peng, J. L. Zhang, B. Z. Hu, F. Li, Z. Hu, X. Wang, D. A. Dwyer, X. Q. Li, Hang Yao, L. H. Wei, Jinjing Li, H. H. Zhang, G. Gong, Ziyi Guo, J. L. Liu, C. E. Tull, Y. X. Zhang, X. N. Li, J. H. C. Lee, C. Marshall, J. Y. Zhao, D. R. Wu, M. Ye, Hua‐Zhong Yu, Z. Y. Zhang, Y. Chen, J. H. Huang, M. Qi, Lei Guo, R. D. McKeown, K. B. Luk, M. V. Diwan, N. Y. Wang, Zhongyong Chen, W. D. Li, Y. M. Zhang, S. Hans, S. M. Chen, Y. Y. Zhang, M. Kramer, Yuda Zeng, X. Y. Ding, J. P. Ochoa‐Ricoux, S. Q. Zhang, J. Park, O. Dalager, Z. K. Cheng, Ying Ding, J. W. Zhang, S. Li, M. Gonchar, X. H. Guo, T. Dohnal, Y. K. Heng, F. S. Deng, J. Dove, F. Z. Qi, J. L. Xu, C. J. Lin, H. S. Chen, R. A. Johnson, Y. K. Hor, X. B., Z. B. Li, M. C. Chu, C. H. Wang, H. L. Li, E. Worcester, Patrick Huber, Qingming Zhang, J. Napolitano, R. G. Wang, K. T. McDonald, J. Lee, D. E. Jaffe, B. Z., Y. X. Chen, Y. F. Li, J. F. Chang, H. X. Huang, S. Li, G. L. Lin, Jiajie Guo, Z. J. Zhang, B. Viren, X. C. Ruan, Y. B. Huang, Y. Q., A. Olshevskiy, R. H. Li, A. B. Balantekin, Jie Cheng, Yue Meng, R. Leitner, W. Wu, Z. P. Zhang, H. Y. Chen, J. M. Link, G. F. Cao, M. Bishai, T. J. Langford, Y. Chang, Haipeng Gong, Yan Yang, B. Russell, T. M. T. Nguyen, K. Whisnant, Yi‐Chuan Cheng, V. Zavadskyi, T. Xue, X. Y., D. Dolzhikov, D. Naumov, D. Jones, L. Littenberg, H. Liang, Zhe Wang, Li Zhou, H. Wei, Jie Ren, Junding Sun, X. Qian, H. L. Zhuang, Wenqi Bai, Liang Zhan, X. L. Ji, J. J. Ling, B. R. Littlejohn, Y. H. Guo, C. S. J. Pun, V. Vorobel, W. Wei, R. Hackenburg, K. M. Heeger, C. G. Yang, S. Blyth, J. J. Cherwinka, M. He, B. L. Young, H. L. H. Wong, K. L. Jen, Q. Wu, C. Morales Reveco, L. Yang, D. M. Xia, S. Patton, R. C. Mandujano, R. T. Lei, Yang Han, C. White, S. Zeng, Y. F. Wang, B. B. Yue, B. Roskovec, S. Kohn, Y. B. Hsiung, J. H. Zou, C. Lu, T. Hu, W.-H. Tse, H. Steiner, E. Naumova, Feifan Zhang, R. Z. Zhao, Z. Z. Xing, Q. J. Li, J. K. C. Leung, W. Q. Gu, Z. Q. Xie, J. P. Cummings, C. Zhang, Jun Wang, Wenxue Wang, T. Xu
article en
3 citations

Abstract

This Letter reports the first measurement of the oscillation amplitude and frequency of reactor antineutrinos at Daya Bay via neutron capture on hydrogen using 1958 days of data. With over 3.6 million signal candidates, an optimized candidate selection, improved treatment of backgrounds and efficiencies, refined energy calibration, and an energy response model for the capture-on-hydrogen sensitive region, the relative ν[over ¯]_{e} rates and energy spectra variation among the near and far detectors gives sin^{2}2θ_{13}=0.0759_{-0.0049}^{+0.0050} and Δm_{32}^{2}=(2.72_{-0.15}^{+0.14})×10^{-3} eV^{2} assuming the normal neutrino mass ordering, and Δm_{32}^{2}=(-2.83_{-0.14}^{+0.15})×10^{-3} eV^{2} for the inverted neutrino mass ordering. This estimate of sin^{2}2θ_{13} is consistent with and essentially independent from the one obtained using the capture-on-gadolinium sample at Daya Bay. The combination of these two results yields sin^{2}2θ_{13}=0.0833±0.0022, which represents an 8% relative improvement in precision regarding the Daya Bay full 3158-day capture-on-gadolinium result.

Physical Review LettersVol. 133(15)
California Institute of Technology (US), National United University (TW), University of Science and Technology of China (CN), Lawrence Berkeley National Laboratory (US), National Yang Ming Chiao Tung University (TW), Guangxi University (CN), North China Electric Power University (CN), Shandong University (CN), University of Illinois Urbana-Champaign (US), Sun Yat-sen University (CN), Chongqing University (CN), William & Mary (US), National Taiwan University (TW), National University of Defense Technology (CN), Iowa State University (US), Chinese University of Hong Kong (HK), Shenzhen University (CN), Illinois Institute of Technology (US), Shanghai Jiao Tong University (CN), Hong Kong University of Science and Technology (HK), Brookhaven National Laboratory (US), Princeton University (US), Nankai University (CN), Charles University (CZ), Beijing Normal University (CN), Dongguan University of Technology (CN), Temple College (US), University of California System (US), Joint Institute for Nuclear Research (RU), Yale University (US), China Institute of Atomic Energy (CN), China General Nuclear Power Corporation (China) (CN), University of Cincinnati (US), Temple University (US), Virginia Tech (US), Xi'an Jiaotong University (CN), Nanjing University (CN), University of Hong Kong (HK), Siena College (US), Tsinghua University (CN)
National Science Foundation, U.S. Department of Energy, Alfred P. Sloan Foundation, Univerzita Karlova v Praze, Shandong University, China Railway, National Natural Science Foundation of China, Ministerstvo Školství, Mládeže a Tělovýchovy, National Science Council, Russian Foundation for Basic Research, Ministry of Education of the People's Republic of China, Chinese Academy of Sciences, Ministry of Science and Technology of the People's Republic of China, Government of Guangdong Province, Research Grants Council, University Grants Committee, University of Hong Kong, Tsinghua University, Ministry of Education, India, National Chiao Tung University, National Taiwan University, CAS Center for Excellence in Particle Physics, Shanghai Key Laboratory for Particle Physics and Cosmology, Comisión Nacional de Investigación Científica y Tecnológica
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