Improved Measurement of the Reactor Antineutrino Flux at Daya Bay

@article{Adey2018ImprovedMO,
  title={Improved Measurement of the Reactor Antineutrino Flux at Daya Bay},
  author={D. Adey and F. An and A. Balantekin and H. Band and M. Bishai and S. Blyth and D. Cao and G. Cao and J. Cao and Y. Chan and J. Chang and Y. Chang and H. Chen and S. Chen and Y. Chen and J. Cheng and Z. Cheng and J. Cherwinka and M. Chu and A. Chukanov and J. Cummings and F. Deng and Y. Ding and M. Diwan and M. Dolgareva and J. Dove and D. Dwyer and W. Edwards and M. Gonchar and G. Gong and H. Gong and W. Gu and L. Guo and X. Guo and Y. H. Guo and Z. Guo and R. Hackenburg and S. Hans and M. He and K. Heeger and Y. Heng and A. Higuera and Y. Hsiung and B. Hu and T. Hu and Z. Hu and H. Huang and X. Huang and Y. Huang and P. Huber and W. Huo and G. Hussain and D. Jaffe and K. Jen and X. Ji and R. Johnson and D. Jones and L. Kang and S. Kettell and L. Koerner and S. Kohn and M. Kramer and T. Langford and L. Lebanowski and J. Lee and R. Lei and R. Leitner and J. Leung and C. Li and F. Li and H. Li and Q. J. Li and S. Li and S. J. Li and W. D. Li and X. Li and Y. Li and Z. Li and H. Liang and C. J. Lin and G. Lin and S. Lin and Y-c Lin and J. Ling and J. Link and L. Littenberg and B. Littlejohn and J. Liu and Y. Liu and Chang Wei Loh and C. Lu and H. Lu and J. Lu and K. Luk and X. Ma and Y. Ma and Y. Malyshkin and C. Marshall and D. M. Caicedo and K. McDonald and R. McKeown and I. Mitchell and L. Lepin and J. Napolitano and D. Naumov and E. Naumova and J. P. Ochoa-Ricoux and A. Olshevskiy and H. Pan and J. Park and S. Patton and V. Pě{\vc} and J. C. Peng and L. Pinsky and C. Pun and F. Qi and M. Qi and X. Qian and R. Qiu and N. Raper and J. Ren and R. Rosero and B. Roskovec and X. Ruan and H. Steiner and J. L. Sun and K. Treskov and W.-H. Tse and C. Tull and B. Viren and V. Vorobel and C. Wang and J. Wang and M. Wang and N. Y. Wang and R. G. Wang and W. Wang and X. Wang and Y. F. Wang and Z. Wang and H. Wei and L. Wei and L. Wen and K. Whisnant and C. White and T. Wise and H. Wong and S. Wong and E. orcester and Q. Wu and W. J. Wu and D. Xia and Z. Xing and J. Xu and T. Xue and C. Yang and H. Yang and L. Yang and M. S. Yang and M. T. Yang and Y. Yang and M. Ye and M. Yeh and B. Young and H. Z. Yu and Z. Y. Yu and B. Yue and S. Zeng and L. Zhan and C. Zhang and F. Y. Zhang and H. H. Zhang and J. Zhang and Q. Zhang and R. Zhang and X. Zhang and X. T. Zhang and Y. Zhang and Z. Zhang and J. Zhao and P. Zheng and L. Zhou and H. Zhuang and J. Zou},
  journal={arXiv: High Energy Physics - Experiment},
  year={2018}
}
  • D. Adey, F. An, +196 authors J. Zou
  • Published 2018
  • Physics
  • arXiv: High Energy Physics - Experiment
This work reports a precise measurement of the reactor antineutrino flux using 2.2 million inverse beta decay (IBD) events collected with the Daya Bay near detectors in 1230 days. The dominant uncertainty on the neutron detection efficiency is reduced by 56% with respect to the previous measurement through a comprehensive neutron calibration and detailed data and simulation analysis. The new average IBD yield is determined to be $(5.91\pm0.09)\times10^{-43}~\rm{cm}^2/\rm{fission}$ with total… Expand

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References

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Improved Measurement of the Reactor Antineutrino Flux and Spectrum at Daya Bay
A new measurement of the reactor antineutrino flux and energy spectrum by the Daya Bay reactor neutrino experiment is reported. The antineutrinos were generated by six 2.9~GW$_{\mathrm{th}}$ nuclearExpand
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TLDR
While measurements of the evolution in the IBD spectrum show general agreement with predictions from recent reactor models, the measured evolution in total IBD yield disagrees with recent predictions at 3.1σ, indicating that an overall deficit in the measured flux with respect to predictions does not result from equal fractional deficits from the primary fission isotopes. Expand
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Measurement of the Reactor Antineutrino Flux and Spectrum at Daya Bay.
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The Daya Bay Reactor Neutrino Experiment has measured a nonzero value for the neutrino mixing angle θ(13) with a significance of 5.2 standard deviations. Antineutrinos from six 2.9 GWth reactors wereExpand
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