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