Open Access

Measurement of reactor antineutrino oscillation parameters using the full 3800-day dataset of the RENO experiment

S. Jeon^1,2,3, H. I. Kim², J. H. Choi¹, H. I. Jang⁴, J. S. Jang⁵, K. K. Joo⁶, D. E. Jung⁶, J. G. Kim⁷, J. H. Kim⁷ et al. (RENO Collaboration)

J. H. Kim⁷, J. Y. Kim⁶, S. B. Kim², S. Y. Kim⁶, W. Kim⁸, E. Kwon⁷, D. H. Lee⁹, H. G. Lee⁶, W. J. Lee², I. T. Lim⁶, D. H. Moon⁶, M. Y. Pac¹, J. S. Park⁸, R. G. Park⁶, H. Seo², J. W. Seo⁷, C. D. Shin⁹, B. S. Yang⁶, J. Yoo ², S. G. Yoon², I. S. Yeo¹, and I. Yu⁷ (RENO Collaboration)

¹Institute for High Energy Physics, Dongshin University, Naju 58245, Korea
²Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
³Global—Learning and Academic research institution for Master’s PhD students, and Postdocs, Kyungpook National University, Daegu 41566, Korea
⁴Department of Fire Safety, Seoyeong University, Gwangju 61268, Korea
⁵Gwangju Institute of Science and Technology, Gwangju 61005, Korea
⁶Department of Physics, Chonnam National University, Gwangju 61186, Korea
⁷Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
⁸Department of Physics, Kyungpook National University, Daegu 41566, Korea
⁹High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki, Japan

PDF

Phys. Rev. D 111, 112006 – Published 17 June, 2025

DOI: https://doi.org/10.1103/dc6j-5ky6

Abstract

We report an updated neutrino mixing angle of $θ_{13}$ obtained from a complete data sample of the RENO experiment. The experiment has measured the amplitude and frequency of reactor electron antineutrino ( ${\bar{ν}}_{e}$ ) oscillations at the Hanbit nuclear power plant, Younggwang, Korea, since August 2011. As of March 2023, the data acquisition was completed after a total of 3800 live days of detector operation. The observed candidates via inverse beta decay with the neutron capture on the gadolinium channel are 1,211,995 (144,667) in the near (far) detector. Based on an observed energy-dependent reactor neutrino disappearance, neutrino oscillation parameters of $θ_{13}$ and $| Δ m_{e e}^{2} |$ are precisely determined as $\sin^{2} 2 θ_{13} = 0.092 0_{- 0.0042}^{+ 0.0044} (stat)_{- 0.0041}^{+ 0.0041} (syst)$ and $| Δ m_{e e}^{2} | = [2.5 7_{- 0.11}^{+ 0.10} (stat)_{- 0.05}^{+ 0.05} (syst)] \times 10^{- 3} {eV}^{2}$ . Compared to the previously published RENO results, the precision is improved from 7.5% to 6.4% for $\sin^{2} 2 θ_{13}$ and from 5.2% to 4.5% for $| Δ m_{e e}^{2} |$ . The statistical error of the measurement has reached our goal and is hardly improved with additional data taking.

Physics Subject Headings (PhySH)

Neutrinos

Article Text

References (32)

B. Pontecorvo, Zh. Eksp. Teor. Fiz. 34, 247 (1957).
Z. Maki, M. Nakagawa, and S. Sakata, Prog. Theor. Phys. 28, 870 (1962).
J. K. Ahn et al. (RENO Collaboration), Phys. Rev. Lett. 108, 191802 (2012).
F. P. An et al. (Daya Bay Collaboration), Phys. Rev. Lett. 108, 171803 (2012).
Y. Abe et al. (Double Chooz Collaboration), Phys. Rev. Lett. 108, 131801 (2012).
G. Bak et al. (RENO Collaboration), Phys. Rev. Lett. 121, 201801 (2018).
F. P. An et al. (Daya Bay Collaboration), Phys. Rev. Lett. 130, 161802 (2023).
K. Abe et al. (Hyper-Kamiokande Proto-Collaboration), arXiv:1805.04163.
B. Abi et al. (DUNE Collaboration), J. Instrum. 15, T08008 (2020).
J. H. Choi et al. (RENO Collaboration), Phys. Rev. Lett. 116, 211801 (2016).
S. Petcov, and M. Piai, Phys. Lett. B 533, 94 (2002).
H. Nunokawa, S. Parke, and R. Z. Funchal, Phys. Rev. D 72, 013009 (2005).
S. Yamada et al., IEEE Trans. Nucl. Sci. 57, 428 (2010).
J. K. Ahn et al. (RENO Collaboration), arXiv:1003.1391.
S. H. Seo et al. (RENO Collaboration), Phys. Rev. D 98, 012002 (2018).
H. S. Kim, New Phys. (Korean Phys. Soc) 62, 631 (2012).
H. S. Kim et al. (RENO Collaboration), J. Instrum. 18, P07020 (2023).
J. Crespo-Anadón, Nucl. Part. Phys. Proc. 265–266, 99 (2015).
F. P. An et al. (Daya Bay Collaboration), Phys. Rev. D 95, 072006 (2017).
P. Vogel, and J. F. Beacom, Phys. Rev. D 60, 053003 (1999).
J. Park et al. (RENO Collaboration), Nucl. Instrum. Methods Phys. Res., Sect. A 707, 45 (2013).
F. P. An et al. (Daya Bay Collaboration), Phys. Rev. D 93, 072011 (2016).
Y. S. Liu, A. Meliksetian, J. A. Rathkopf, D. C. Little, F. Nakano, M. J. Poploski, S. L. Davidson, and N. A. Silva, ANC: A westinghouse advanced nodal computing code, westinghouse Report No. WCAP-10965-P-A(P), 1986.
Y. V. Klimov, V. I. Kopeikin, L. A. Mikaélyan, K. V. Ozerov, and V. V. Sinev, At. Energ. 76, 123 (1994).
V. I. Kopeikin, L. A. Mikaelyan, and V. V. Sinev, Phys. At. Nucl. 67, 1892 (2004).
Z. Djurcic, J. A. Detwiler, A. Piepke, V. R. Foster, L. Miller, and G. Gratta, J. Phys. G 36, 045002 (2009).
X. B. Ma et al., Mod. Phys. Lett. A 31, 1650120 (2016).
X. Ma, R. M. Qiu, and Y. X. Chen, Nucl. Phys. A958, 211 (2017).
T. A. Mueller et al., Phys. Rev. C 83, 054615 (2011).
P. Huber, Phys. Rev. C 84, 024617 (2011).
S. Navas et al. (Particle Data Group), Phys. Rev. D 110, 030001 (2024).
Y. Abe et al. (Double Chooz Collaboration), J. High Energy Phys. 10 (2014) 086.

Phys. Rev. D 111, 112006– Published 17 June, 2025

Vol. 111, Iss. 11 — 1 June 2025

Received 1 January 2025
Accepted 22 April 2025

DOI: https://doi.org/10.1103/dc6j-5ky6

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP³.

Published by the American Physical Society

Physical Review D

Reuse & Permissions

Export citation

Export citation

Measurement of reactor antineutrino oscillation parameters using the full 3800-day dataset of the RENO experiment

Abstract

Physics Subject Headings (PhySH)

Article Text

References (32)

Outline

Information

Filter

Filter

Article Lookup

Enter a citation