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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2412.18711 |
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| _version_ | 1866917879587274752 |
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| author | Jeon, S. Kim, H. I. Choi, J. H. Jang, H. I. Jang, J. S. Joo, K. K. Jung, D. E. Kim, J. G. Kim, J. H. Kim, J. Y. Kim, S. B. Kim, S. Y. Kim, W. Kwon, E. Lee, D. H. Lee, H. G. Lee, W. J. Lim, I. T. Moon, D. H. Pac, M. Y. Park, J. S. Park, R. G. Seo, H. Seo, J. W. Shin, C. D. Yang, B. S. Yoo, J. Yoon, S. G. Yeo, I. S. Yu, I. |
| author_facet | Jeon, S. Kim, H. I. Choi, J. H. Jang, H. I. Jang, J. S. Joo, K. K. Jung, D. E. Kim, J. G. Kim, J. H. Kim, J. Y. Kim, S. B. Kim, S. Y. Kim, W. Kwon, E. Lee, D. H. Lee, H. G. Lee, W. J. Lim, I. T. Moon, D. H. Pac, M. Y. Park, J. S. Park, R. G. Seo, H. Seo, J. W. Shin, C. D. Yang, B. S. Yoo, J. Yoon, S. G. Yeo, I. S. Yu, I. |
| contents | 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 anti-electron-neutrinos ($\barν_{e}$) 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 (IBD) 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 $\lvertΔm_{ee}^2\rvert$ are precisely determined as $\sin^{2}2θ_{13}=0.0920_{-0.0042}^{+0.0044}(\text{stat.})_{-0.0041}^{+0.0041}(\text{syst.})$ and $\lvertΔm_{ee}^2\rvert=\left[2.57_{-0.11}^{+0.10}(\text{stat.})_{-0.05}^{+0.05}(\text{syst.})\right]\times10^{-3}~\text{eV}^{2}$. Compared to the previous RENO results published in Ref.~\cite{PhysRevLett.121.201801}, the precision is improved from 7.5\% to 6.4\% for $\sin^{2}2θ_{13}$ and from 5.2\% to 4.5\% for $\lvertΔm_{ee}^2\rvert$. The statistical error of the measurement has reached our goal and is hardly improved with additional data-taking. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_18711 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Measurement of reactor antineutrino oscillation amplitude and frequency using 3800 days of complete data sample of the RENO experiment Jeon, S. Kim, H. I. Choi, J. H. Jang, H. I. Jang, J. S. Joo, K. K. Jung, D. E. Kim, J. G. Kim, J. H. Kim, J. Y. Kim, S. B. Kim, S. Y. Kim, W. Kwon, E. Lee, D. H. Lee, H. G. Lee, W. J. Lim, I. T. Moon, D. H. Pac, M. Y. Park, J. S. Park, R. G. Seo, H. Seo, J. W. Shin, C. D. Yang, B. S. Yoo, J. Yoon, S. G. Yeo, I. S. Yu, I. High Energy Physics - Experiment 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 anti-electron-neutrinos ($\barν_{e}$) 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 (IBD) 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 $\lvertΔm_{ee}^2\rvert$ are precisely determined as $\sin^{2}2θ_{13}=0.0920_{-0.0042}^{+0.0044}(\text{stat.})_{-0.0041}^{+0.0041}(\text{syst.})$ and $\lvertΔm_{ee}^2\rvert=\left[2.57_{-0.11}^{+0.10}(\text{stat.})_{-0.05}^{+0.05}(\text{syst.})\right]\times10^{-3}~\text{eV}^{2}$. Compared to the previous RENO results published in Ref.~\cite{PhysRevLett.121.201801}, the precision is improved from 7.5\% to 6.4\% for $\sin^{2}2θ_{13}$ and from 5.2\% to 4.5\% for $\lvertΔm_{ee}^2\rvert$. The statistical error of the measurement has reached our goal and is hardly improved with additional data-taking. |
| title | Measurement of reactor antineutrino oscillation amplitude and frequency using 3800 days of complete data sample of the RENO experiment |
| topic | High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2412.18711 |