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Antineutrino energy spectrum unfolding based on the Daya Bay measurement and its applications

An, F. P. and Balantekin, A. B. and Bishai, M. and Blyth, S. and Cao, G. F. and Cao, J. and Chang, J. F. and Chang, Y. and Chen, H. S. and Chen, S. M. and Chen, Y. and Chen, Y. X. and Cheng, J. and Cheng, Z. K. and Cherwinka, J. J. and Chu, M. C. and Cummings, J. P. and Dalager, O. and Deng, F. S. and Ding, Y. Y. and Diwan, M. V. and Dohnal, T. and Dolzhikov, D. and Dove, J. and Dvořák, M. and Dwyer, D. A. and Gallo, J. P. and Gonchar, M. and Gong, G. H. and Gong, H. and Grassi, M. and Gu, W. Q. and Guo, J. Y. and Guo, L. and Guo, X. H. and Guo, Y. H. and Guo, Z. and Hackenburg, R. W. and Hans, S. and He, M. and Heeger, K. M. and Heng, Y. K. and Hor, Y. K. and Hsiung, Y. B. and Hu, B. Z. and Hu, J. R. and Hu, T. and Hu, Z. J. and Huang, H. X. and Huang, J. H. and Huang, X. T. and Huang, Y. B. and Huber, P. and Jaffe, D. E. and Jen, K. L. and Ji, X. L. and Ji, X. P. and Johnson, R. A. and Jones, D. and Kang, L. and Kettell, S. H. and Kohn, S. and Kramer, M. and Langford, T. J. and Lee, J. and Lee, J. H. C. and Lei, R. T. and Leitner, R. and Leung, J. K. C. and Li, F. and Li, H. L. and Li, J. J. and Li, Q. J. and Li, R. H. and Li, S. and Li, S. C. and Li, W. D. and Li, X. N. and Li, X. Q. and Li, Y. F. and Li, Z. B. and Liang, H. and Lin, C. J. and Lin, G. L. and Lin, S. and Ling, J. J. and Link, J. M. and Littenberg, L. and Littlejohn, B. R. and Liu, J. C. and Liu, J. L. and Liu, J. X. and Lu, C. and Lu, H. Q. and Luk, K. B. and Ma, B. Z. and Ma, X. B. and Ma, X. Y. and Ma, Y. Q. and Mandujano, R. C. and Marshall, C. and McDonald, K. T. and McKeown, R. D. and Meng, Y. and Napolitano, J. and Naumov, D. and Naumova, E. and Nguyen, T. M. T. and Ochoa-Ricoux, J. P. and Olshevskiy, A. and Pan, H.-R. and Park, J. and Patton, S. and Peng, J. C. and Pun, C. S. J. and Qi, F. Z. and Qi, M. and Qian, X. and Raper, N. and Ren, J. and Reveco, C. Morales and Rosero, R. and Roskovec, B. and Ruan, X. C. and Steiner, H. and Sun, J. L. and Tmej, T. and Treskov, K. and Tse, W.-H. and Tull, C. E. and Viren, B. and Vorobel, V. and Wang, C. H. and Wang, J. and Wang, M. and Wang, N. Y. and Wang, R. G. and Wang, W. and Wang, W. and Wang, X. and Wang, Y. and Wang, Y. F. and Wang, Z. and Wang, Z. and Wang, Z. M. and Wei, H. Y. and Wei, L. H. and Wen, L. J. and Whisnant, K. and White, C. G. and Wong, H. L. H. and Worcester, E. and Wu, D. R. and Wu, F. L. and Wu, Q. and Wu, W. J. and Xia, D. M. and Xie, Z. Q. and Xing, Z. Z. and Xu, H. K. and Xu, J. L. and Xu, T. and Xue, T. and Yang, C. G. and Yang, L. and Yang, Y. Z. and Yao, H. F. and Ye, M. and Yeh, M. and Young, B. L. and Yu, H. Z. and Yu, Z. Y. and Yue, B. B. and Zavadskyi, V. and Zeng, S. and Zeng, Y. and Zhan, L. and Zhang, C. and Zhang, F. Y. and Zhang, H. H. and Zhang, J. W. and Zhang, Q. M. and Zhang, S. Q. and Zhang, X. T. and Zhang, Y. M. and Zhang, Y. X. and Zhang, Y. Y. and Zhang, Z. J. and Zhang, Z. P. and Zhang, Z. Y. and Zhao, J. and Zhao, R. Z. and Zhou, L. and Zhuang, H. L. and Zou, J. H. (2021) Antineutrino energy spectrum unfolding based on the Daya Bay measurement and its applications. Chinese Physics C, 45 (7). Art. No. 073001. ISSN 1674-1137. doi:10.1088/1674-1137/abfc38. https://resolver.caltech.edu/CaltechAUTHORS:20210701-140808337

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Abstract

The prediction of reactor antineutrino spectra will play a crucial role as reactor experiments enter the precision era. The positron energy spectrum of 3.5 million antineutrino inverse beta decay reactions observed by the Daya Bay experiment, in combination with the fission rates of fissile isotopes in the reactor, is used to extract the positron energy spectra resulting from the fission of specific isotopes. This information can be used to produce a precise, data-based prediction of the antineutrino energy spectrum in other reactor antineutrino experiments with different fission fractions than Daya Bay. The positron energy spectra are unfolded to obtain the antineutrino energy spectra by removing the contribution from detector response with the Wiener-SVD unfolding method. Consistent results are obtained with other unfolding methods. A technique to construct a data-based prediction of the reactor antineutrino energy spectrum is proposed and investigated. Given the reactor fission fractions, the technique can predict the energy spectrum to a 2% precision. In addition, we illustrate how to perform a rigorous comparison between the unfolded antineutrino spectrum and a theoretical model prediction that avoids the input model bias of the unfolding method.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1088/1674-1137/abfc38DOIArticle
https://arxiv.org/abs/2102.04614arXivDiscussion Paper
Additional Information:© 2021. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAP and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd. Received 9 February 2021; Accepted 28 April 2021; Published online 1 June 2021. We acknowledge Yellow River Engineering Consult- ing Co., Ltd., and China Railway 15th Bureau Group Co., Ltd., for building the underground laboratory. We are grateful for the ongoing cooperation from the China Guangdong Nuclear Power Group and China Light & Power Company. Supported in part by the Ministry of Science and Technology of China, the U.S. Department of Energy, the Chinese Academy of Sciences, the CAS Center for Excellence in Particle Physics, the National Natural Science Foundation of China, the Guangdong provincial government, the Shenzhen municipal government, the China General Nuclear Power Group, the Research Grants Council of the Hong Kong Special Administrative Region of China, the Ministry of Education in TW, the U.S. National Science Foundation, the Ministry of Education, Youth, and Sports of the Czech Republic, the Charles University Research Centre UNCE, the Joint Institute of Nuclear Research in Dubna, Russia, the National Commission of Scientific and Technological Research of Chile.
Funders:
Funding AgencyGrant Number
Ministry of Science and Technology (Taipei)UNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
Chinese Academy of SciencesUNSPECIFIED
National Natural Science Foundation of ChinaUNSPECIFIED
Guangdong Provincial GovernmentUNSPECIFIED
Shenzhen Municipal GovernmentUNSPECIFIED
China General Nuclear Power GroupUNSPECIFIED
Research Grants Council of the Hong Kong Special Administrative Region of ChinaUNSPECIFIED
Ministry of Education (Taipei)UNSPECIFIED
NSFUNSPECIFIED
Ministry of Education, Youth and Sports (Czech Republic)UNSPECIFIED
Charles UniversityUNSPECIFIED
Joint Institute of Nuclear Research (Dubna)UNSPECIFIED
Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT)UNSPECIFIED
Subject Keywords:reactor antineutrino, energy spectrum, Daya Bay, application
Issue or Number:7
DOI:10.1088/1674-1137/abfc38
Record Number:CaltechAUTHORS:20210701-140808337
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20210701-140808337
Official Citation:F. P. An et al 2021 Chinese Phys. C 45 073001
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:109689
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:02 Jul 2021 19:59
Last Modified:02 Jul 2021 19:59

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