Precision Measurement of Reactor Antineutrino Oscillation at Kilometer-Scale Baselines by Daya Bay

F P An¹, W D Bai¹, A B Balantekin², M Bishai³, S Blyth⁴, G F Cao⁵, J Cao⁵, J F Chang⁵, Y Chang⁶, H S Chen⁵, H Y Chen⁷, S M Chen⁷, Y Chen^{1

8}, Y X Chen⁹, Z Y Chen⁵, J Cheng⁹, Z K Cheng¹, J J Cherwinka², M C Chu¹⁰, J P Cummings¹¹, O Dalager¹², F S Deng¹³, Y Y Ding⁵, X Y Ding¹⁴, M V Diwan³, T Dohnal¹⁵, D Dolzhikov¹⁶, J Dove¹⁷, H Y Duyang¹⁴, D A Dwyer¹⁸, J P Gallo¹⁹, M Gonchar¹⁶, G H Gong⁷, H Gong⁷, W Q Gu³, J Y Guo¹, L Guo⁷, X H Guo²⁰, Y H Guo²¹, Z Guo⁷, R W Hackenburg³, Y Han¹, S Hans³, M He⁵, K M Heeger²², Y K Heng⁵, Y K Hor¹, Y B Hsiung⁴, B Z Hu⁴, J R Hu⁵, T Hu⁵, Z J Hu¹, H X Huang²³, J H Huang⁵, X T Huang¹⁴, Y B Huang²⁴, P Huber²⁵, D E Jaffe³, K L Jen²⁶, X L Ji⁵, X P Ji³, R A Johnson²⁷, D Jones²⁸, L Kang²⁹, S H Kettell³, S Kohn³⁰, M Kramer^{18

30}, T J Langford²², J Lee¹⁸, J H C Lee³¹, R T Lei²⁹, R Leitner¹⁵, J K C Leung³¹, F Li⁵, H L Li⁵, J J Li⁷, Q J Li⁵, R H Li⁵, S Li²⁹, S C Li²⁵, W D Li⁵, X N Li⁵, X Q Li³², Y F Li⁵, Z B Li¹, H Liang¹³, C J Lin¹⁸, G L Lin²⁶, S Lin²⁹, J J Ling¹, J M Link²⁵, L Littenberg³, B R Littlejohn¹⁹, J C Liu⁵, J L Liu³³, J X Liu⁵, C Lu³⁴, H Q Lu⁵, K B Luk^{18

30

35}, B Z Ma¹⁴, X B Ma⁹, X Y Ma⁵, Y Q Ma⁵, R C Mandujano¹², C Marshall¹⁸, K T McDonald³⁴, R D McKeown^{36

37}, Y Meng³³, J Napolitano²⁸, D Naumov¹⁶, E Naumova¹⁶, T M T Nguyen²⁶, J P Ochoa-Ricoux¹², A Olshevskiy¹⁶, H-R Pan⁴, J Park²⁵, S Patton¹⁸, J C Peng¹⁷, C S J Pun³¹, F Z Qi⁵, M Qi³⁸, X Qian³, N Raper¹, J Ren²³, C Morales Reveco¹², R Rosero³, B Roskovec¹⁵, X C Ruan²³, B Russell¹⁸, H Steiner^{18

30}, J L Sun³⁹, T Tmej¹⁵, K Treskov¹⁶, W-H Tse¹⁰, C E Tull¹⁸, B Viren³, V Vorobel¹⁵, C H Wang⁶, J Wang¹, M Wang¹⁴, N Y Wang²⁰, R G Wang⁵, W Wang^{1

37}, X Wang⁴⁰, Y Wang³⁸, Y F Wang⁵, Z Wang⁵, Z Wang⁷, Z M Wang⁵, H Y Wei³, L H Wei⁵, W Wei¹⁴, L J Wen⁵, K Whisnant⁴¹, C G White¹⁹, H L H Wong^{18

30}, E Worcester³, D R Wu⁵, Q Wu¹⁴, W J Wu⁵, D M Xia⁴², Z Q Xie⁵, Z Z Xing⁵, H K Xu⁵, J L Xu⁵, T Xu⁷, T Xue⁷, C G Yang⁵, L Yang²⁹, Y Z Yang⁷, H F Yao⁵, M Ye⁵, M Yeh³, B L Young⁴¹, H Z Yu¹, Z Y Yu⁵, B B Yue¹, V Zavadskyi¹⁶, S Zeng⁵, Y Zeng¹, L Zhan⁵, C Zhang³, F Y Zhang³³, H H Zhang¹, J L Zhang³⁸, J W Zhang⁵, Q M Zhang²¹, S Q Zhang¹, X T Zhang⁵, Y M Zhang¹, Y X Zhang³⁹, Y Y Zhang³³, Z J Zhang²⁹, Z P Zhang¹³, Z Y Zhang⁵, J Zhao⁵, R Z Zhao⁵, L Zhou⁵, H L Zhuang⁵, J H Zou⁵; Daya Bay Collaboration

Affiliations

¹ Sun Yat-Sen (Zhongshan) University, Guangzhou.
² University of Wisconsin, Madison, Wisconsin 53706.
³ Brookhaven National Laboratory, Upton, New York 11973.
⁴ Department of Physics, National Taiwan University, Taipei.
⁵ Institute of High Energy Physics, Beijing.
⁶ National United University, Miao-Li.
⁷ Department of Engineering Physics, Tsinghua University, Beijing.
⁸ Shenzhen University, Shenzhen.
⁹ North China Electric Power University, Beijing.
¹⁰ Chinese University of Hong Kong, Hong Kong.
¹¹ Siena College, Loudonville, New York 12211.
¹² Department of Physics and Astronomy, University of California, Irvine, California 92697.
¹³ University of Science and Technology of China, Hefei.
¹⁴ Shandong University, Jinan.
¹⁵ Charles University, Faculty of Mathematics and Physics, Prague.
¹⁶ Joint Institute for Nuclear Research, Dubna, Moscow Region.
¹⁷ Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801.
¹⁸ Lawrence Berkeley National Laboratory, Berkeley, California 94720.
¹⁹ Department of Physics, Illinois Institute of Technology, Chicago, Illinois 60616.
²⁰ Beijing Normal University, Beijing.
²¹ Department of Nuclear Science and Technology, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an.
²² Wright Laboratory and Department of Physics, Yale University, New Haven, Connecticut 06520.
²³ China Institute of Atomic Energy, Beijing.
²⁴ Guangxi University, No.100 Daxue East Road, Nanning.
²⁵ Center for Neutrino Physics, Virginia Tech, Blacksburg, Virginia 24061.
²⁶ Institute of Physics, National Chiao-Tung University, Hsinchu.
²⁷ Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221.
²⁸ Department of Physics, College of Science and Technology, Temple University, Philadelphia, Pennsylvania 19122.
²⁹ Dongguan University of Technology, Dongguan.
³⁰ Department of Physics, University of California, Berkeley, California 94720.
³¹ Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong.
³² School of Physics, Nankai University, Tianjin.
³³ Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai.
³⁴ Joseph Henry Laboratories, Princeton University, Princeton, New Jersey 08544.
³⁵ The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong.
³⁶ California Institute of Technology, Pasadena, California 91125.
³⁷ College of William and Mary, Williamsburg, Virginia 23187.
³⁸ Nanjing University, Nanjing.
³⁹ China General Nuclear Power Group, Shenzhen.
⁴⁰ College of Electronic Science and Engineering, National University of Defense Technology, Changsha.
⁴¹ Iowa State University, Ames, Iowa 50011.
⁴² Chongqing University, Chongqing.

PMID: 37154643
DOI: 10.1103/PhysRevLett.130.161802

Precision Measurement of Reactor Antineutrino Oscillation at Kilometer-Scale Baselines by Daya Bay

F P An et al. Phys Rev Lett. 2023.

. 2023 Apr 21;130(16):161802.

doi: 10.1103/PhysRevLett.130.161802.

Authors

Affiliations

¹ Sun Yat-Sen (Zhongshan) University, Guangzhou.
² University of Wisconsin, Madison, Wisconsin 53706.
³ Brookhaven National Laboratory, Upton, New York 11973.
⁴ Department of Physics, National Taiwan University, Taipei.
⁵ Institute of High Energy Physics, Beijing.
⁶ National United University, Miao-Li.
⁷ Department of Engineering Physics, Tsinghua University, Beijing.
⁸ Shenzhen University, Shenzhen.
⁹ North China Electric Power University, Beijing.
¹⁰ Chinese University of Hong Kong, Hong Kong.
¹¹ Siena College, Loudonville, New York 12211.
¹² Department of Physics and Astronomy, University of California, Irvine, California 92697.
¹³ University of Science and Technology of China, Hefei.
¹⁴ Shandong University, Jinan.
¹⁵ Charles University, Faculty of Mathematics and Physics, Prague.
¹⁶ Joint Institute for Nuclear Research, Dubna, Moscow Region.
¹⁷ Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801.
¹⁸ Lawrence Berkeley National Laboratory, Berkeley, California 94720.
¹⁹ Department of Physics, Illinois Institute of Technology, Chicago, Illinois 60616.
²⁰ Beijing Normal University, Beijing.
²¹ Department of Nuclear Science and Technology, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an.
²² Wright Laboratory and Department of Physics, Yale University, New Haven, Connecticut 06520.
²³ China Institute of Atomic Energy, Beijing.
²⁴ Guangxi University, No.100 Daxue East Road, Nanning.
²⁵ Center for Neutrino Physics, Virginia Tech, Blacksburg, Virginia 24061.
²⁶ Institute of Physics, National Chiao-Tung University, Hsinchu.
²⁷ Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221.
²⁸ Department of Physics, College of Science and Technology, Temple University, Philadelphia, Pennsylvania 19122.
²⁹ Dongguan University of Technology, Dongguan.
³⁰ Department of Physics, University of California, Berkeley, California 94720.
³¹ Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong.
³² School of Physics, Nankai University, Tianjin.
³³ Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai.
³⁴ Joseph Henry Laboratories, Princeton University, Princeton, New Jersey 08544.
³⁵ The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong.
³⁶ California Institute of Technology, Pasadena, California 91125.
³⁷ College of William and Mary, Williamsburg, Virginia 23187.
³⁸ Nanjing University, Nanjing.
³⁹ China General Nuclear Power Group, Shenzhen.
⁴⁰ College of Electronic Science and Engineering, National University of Defense Technology, Changsha.
⁴¹ Iowa State University, Ames, Iowa 50011.
⁴² Chongqing University, Chongqing.

PMID: 37154643
DOI: 10.1103/PhysRevLett.130.161802

Abstract

We present a new determination of the smallest neutrino mixing angle θ_{13} and the mass-squared difference Δm_{32}^{2} using a final sample of 5.55×10^{6} inverse beta-decay (IBD) candidates with the final-state neutron captured on gadolinium. This sample is selected from the complete dataset obtained by the Daya Bay reactor neutrino experiment in 3158 days of operation. Compared to the previous Daya Bay results, selection of IBD candidates has been optimized, energy calibration refined, and treatment of backgrounds further improved. The resulting oscillation parameters are sin^{2}2θ_{13}=0.0851±0.0024, Δm_{32}^{2}=(2.466±0.060)×10^{-3} eV^{2} for the normal mass ordering or Δm_{32}^{2}=-(2.571±0.060)×10^{-3} eV^{2} for the inverted mass ordering.

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Precision Measurement of Reactor Antineutrino Oscillation at Kilometer-Scale Baselines by Daya Bay

Affiliations

Precision Measurement of Reactor Antineutrino Oscillation at Kilometer-Scale Baselines by Daya Bay

Authors

Affiliations

Abstract

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