Search for a Sub-eV Sterile Neutrino Using Daya Bay's Full Dataset

F P An¹, W D Bai¹, A B Balantekin², M Bishai³, S Blyth⁴, G F Cao⁵, J Cao^{5

6}, J F Chang⁵, Y Chang⁷, H S Chen⁵, H Y Chen⁸, S M Chen⁸, Y Chen^{1

9}, Y X Chen¹⁰, Z Y Chen^{5

6}, J Cheng¹⁰, Y-C Cheng⁴, Z K Cheng¹, J J Cherwinka², M C Chu¹¹, J P Cummings¹², O Dalager¹³, F S Deng¹⁴, X Y Ding¹⁵, Y Y Ding⁵, M V Diwan³, T Dohnal¹⁶, D Dolzhikov¹⁷, J Dove¹⁸, K V Dugas¹³, H Y Duyang¹⁵, D A Dwyer¹⁹, J P Gallo²⁰, M Gonchar¹⁷, G H Gong⁸, H Gong⁸, W Q Gu³, J Y Guo¹, L Guo⁸, X H Guo²¹, Y H Guo²², Z Guo⁸, R W Hackenburg³, Y Han¹, S Hans³, M He⁵, K M Heeger²³, Y K Heng⁵, Y K Hor¹, Y B Hsiung⁴, B Z Hu⁴, J R Hu⁵, T Hu⁵, Z J Hu¹, H X Huang²⁴, J H Huang^{5

6}, X T Huang¹⁵, Y B Huang²⁵, P Huber²⁶, D E Jaffe³, K L Jen²⁷, X L Ji⁵, X P Ji³, R A Johnson²⁸, D Jones²⁹, L Kang³⁰, S H Kettell³, S Kohn³¹, M Kramer¹⁹, T J Langford²³, J Lee¹⁹, J H C Lee³², R T Lei³⁰, R Leitner¹⁶, J K C Leung³², F Li⁵, H L Li⁵, J J Li⁸, Q J Li⁵, R H Li^{5

6}, S Li³³, S Li³⁰, S C Li²⁶, W D Li⁵, X N Li⁵, X Q Li³⁴, Y F Li⁵, Z B Li¹, H Liang¹⁴, C J Lin¹⁹, G L Lin²⁷, S Lin³⁰, J J Ling¹, J M Link²⁶, L Littenberg³, B R Littlejohn²⁰, J C Liu⁵, J L Liu³⁵, J X Liu⁵, C Lu³⁶, H Q Lu⁵, K B Luk^{19

31

37}, B Z Ma¹⁵, X B Ma¹⁰, X Y Ma⁵, Y Q Ma⁵, R C Mandujano¹³, C Marshall¹⁹, K T McDonald³⁶, R D McKeown^{38

39}, Y Meng³⁵, J Napolitano²⁹, D Naumov¹⁷, E Naumova¹⁷, T M T Nguyen²⁷, J P Ochoa-Ricoux¹³, A Olshevskiy¹⁷, J Park²⁶, S Patton¹⁹, J C Peng¹⁸, C S J Pun³², F Z Qi⁵, M Qi³³, X Qian³, N Raper¹, J Ren²⁴, C Morales Reveco¹³, R Rosero³, B Roskovec¹⁶, X C Ruan²⁴, B Russell¹⁹, H Steiner^{19

31}, J L Sun⁴⁰, T Tmej¹⁶, W-H Tse¹¹, C E Tull¹⁹, Y C Tung⁴, B Viren³, V Vorobel¹⁶, C H Wang⁷, J Wang¹, M Wang¹⁵, N Y Wang²¹, R G Wang⁵, W Wang¹, X Wang⁴¹, Y F Wang⁵, Z Wang⁵, Z Wang⁸, Z M Wang⁵, H Y Wei³, L H Wei⁵, W Wei¹⁵, L J Wen⁵, K Whisnant⁴², C G White²⁰, H L H Wong^{19

31}, E Worcester³, D R Wu⁵, Q Wu¹⁵, W J Wu⁵, D M Xia⁴³, Z Q Xie⁵, Z Z Xing⁵, H K Xu⁵, J L Xu⁵, T Xu⁸, T Xue⁸, C G Yang⁵, L Yang³⁰, Y Z Yang⁸, H F Yao⁵, M Ye⁵, M Yeh³, B L Young⁴², H Z Yu¹, Z Y Yu⁵, C Z Yuan^{5

6}, B B Yue¹, V Zavadskyi¹⁷, S Zeng⁵, Y Zeng¹, L Zhan⁵, C Zhang³, F Y Zhang³⁵, H H Zhang¹, J L Zhang³³, J W Zhang⁵, Q M Zhang²², S Q Zhang¹, X T Zhang⁵, Y M Zhang¹, Y X Zhang⁴⁰, Y Y Zhang³⁵, Z J Zhang³⁰, Z P Zhang¹⁴, Z Y Zhang⁵, J Zhao⁵, R Z Zhao⁵, L Zhou⁵, H L Zhuang⁵, J H Zou⁵; Daya Bay Collaboration

Affiliations

¹ <a href="https://ror.org/0064kty71">Sun Yat-Sen (Zhongshan) University</a>, 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 New Cornerstone Science Laboratory, Institute of High Energy Physics, Beijing.
⁷ National United University, Miao-Li.
⁸ Department of Engineering Physics, Tsinghua University, Beijing.
⁹ Shenzhen University, Shenzhen.
¹⁰ North China Electric Power University, Beijing.
¹¹ Chinese University of Hong Kong, Hong Kong.
¹² Siena College, Loudonville, New York 12211.
¹³ Department of Physics and Astronomy, University of California, Irvine, California 92697.
¹⁴ University of Science and Technology of China, Hefei.
¹⁵ Shandong University, Jinan.
¹⁶ Charles University, Faculty of Mathematics and Physics, Prague.
¹⁷ Joint Institute for Nuclear Research, Dubna, Moscow Region.
¹⁸ Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801.
¹⁹ Lawrence Berkeley National Laboratory, Berkeley, California 94720.
²⁰ Department of Physics, Illinois Institute of Technology, Chicago, Illinois 60616.
²¹ Beijing Normal University, Beijing.
²² Department of Nuclear Science and Technology, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an.
²³ Wright Laboratory and Department of Physics, Yale University, New Haven, Connecticut 06520.
²⁴ China Institute of Atomic Energy, Beijing.
²⁵ Guangxi University, No.100 Daxue East Road, Nanning.
²⁶ Center for Neutrino Physics, Virginia Tech, Blacksburg, Virginia 24061.
²⁷ Institute of Physics, National Chiao-Tung University, Hsinchu.
²⁸ Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221.
²⁹ Department of Physics, College of Science and Technology, Temple University, Philadelphia, Pennsylvania 19122.
³⁰ Dongguan University of Technology, Dongguan.
³¹ Department of Physics, University of California, Berkeley, California 94720.
³² Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong.
³³ Nanjing University, Nanjing.
³⁴ School of Physics, Nankai University, Tianjin.
³⁵ Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai.
³⁶ Joseph Henry Laboratories, Princeton University, Princeton, New Jersey 08544.
³⁷ The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong.
³⁸ California Institute of Technology, Pasadena, California 91125.
³⁹ College of William and Mary, Williamsburg, Virginia 23187.
⁴⁰ China General Nuclear Power Group, Shenzhen.
⁴¹ College of Electronic Science and Engineering, National University of Defense Technology, Changsha.
⁴² Iowa State University, Ames, Iowa 50011.
⁴³ Chongqing University, Chongqing.

PMID: 39159085
DOI: 10.1103/PhysRevLett.133.051801

Search for a Sub-eV Sterile Neutrino Using Daya Bay's Full Dataset

F P An et al. Phys Rev Lett. 2024.

. 2024 Aug 2;133(5):051801.

doi: 10.1103/PhysRevLett.133.051801.

Authors

Affiliations

¹ <a href="https://ror.org/0064kty71">Sun Yat-Sen (Zhongshan) University</a>, 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 New Cornerstone Science Laboratory, Institute of High Energy Physics, Beijing.
⁷ National United University, Miao-Li.
⁸ Department of Engineering Physics, Tsinghua University, Beijing.
⁹ Shenzhen University, Shenzhen.
¹⁰ North China Electric Power University, Beijing.
¹¹ Chinese University of Hong Kong, Hong Kong.
¹² Siena College, Loudonville, New York 12211.
¹³ Department of Physics and Astronomy, University of California, Irvine, California 92697.
¹⁴ University of Science and Technology of China, Hefei.
¹⁵ Shandong University, Jinan.
¹⁶ Charles University, Faculty of Mathematics and Physics, Prague.
¹⁷ Joint Institute for Nuclear Research, Dubna, Moscow Region.
¹⁸ Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801.
¹⁹ Lawrence Berkeley National Laboratory, Berkeley, California 94720.
²⁰ Department of Physics, Illinois Institute of Technology, Chicago, Illinois 60616.
²¹ Beijing Normal University, Beijing.
²² Department of Nuclear Science and Technology, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an.
²³ Wright Laboratory and Department of Physics, Yale University, New Haven, Connecticut 06520.
²⁴ China Institute of Atomic Energy, Beijing.
²⁵ Guangxi University, No.100 Daxue East Road, Nanning.
²⁶ Center for Neutrino Physics, Virginia Tech, Blacksburg, Virginia 24061.
²⁷ Institute of Physics, National Chiao-Tung University, Hsinchu.
²⁸ Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221.
²⁹ Department of Physics, College of Science and Technology, Temple University, Philadelphia, Pennsylvania 19122.
³⁰ Dongguan University of Technology, Dongguan.
³¹ Department of Physics, University of California, Berkeley, California 94720.
³² Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong.
³³ Nanjing University, Nanjing.
³⁴ School of Physics, Nankai University, Tianjin.
³⁵ Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai.
³⁶ Joseph Henry Laboratories, Princeton University, Princeton, New Jersey 08544.
³⁷ The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong.
³⁸ California Institute of Technology, Pasadena, California 91125.
³⁹ College of William and Mary, Williamsburg, Virginia 23187.
⁴⁰ China General Nuclear Power Group, Shenzhen.
⁴¹ College of Electronic Science and Engineering, National University of Defense Technology, Changsha.
⁴² Iowa State University, Ames, Iowa 50011.
⁴³ Chongqing University, Chongqing.

PMID: 39159085
DOI: 10.1103/PhysRevLett.133.051801

Abstract

This Letter presents results of a search for the mixing of a sub-eV sterile neutrino with three active neutrinos based on the full data sample of the Daya Bay Reactor Neutrino Experiment, collected during 3158 days of detector operation, which contains 5.55×10^{6} reactor ν[over ¯]_{e} candidates identified as inverse beta-decay interactions followed by neutron capture on gadolinium. The analysis benefits from a doubling of the statistics of our previous result and from improvements of several important systematic uncertainties. No significant oscillation due to mixing of a sub-eV sterile neutrino with active neutrinos was found. Exclusion limits are set by both Feldman-Cousins and CLs methods. Light sterile neutrino mixing with sin^{2}2θ_{14}≳0.01 can be excluded at 95% confidence level in the region of 0.01 eV^{2}≲|Δm_{41}^{2}|≲0.1 eV^{2}. This result represents the world-leading constraints in the region of 2×10^{-4} eV^{2}≲|Δm_{41}^{2}|≲0.2 eV^{2}.

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Search for a Sub-eV Sterile Neutrino Using Daya Bay's Full Dataset

Affiliations

Search for a Sub-eV Sterile Neutrino Using Daya Bay's Full Dataset

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