First Search for Short-Baseline Neutrino Oscillations at HFIR with PROSPECT

作     者：J. Ashenfelter A. B. Balantekin C. Baldenegro H. R. Band C. D. Bass D. E. Bergeron D. Berish L. J. Bignell N. S. Bowden J. Bricco J. P. Brodsky C. D. Bryan A. Bykadorova Telles J. J. Cherwinka T. Classen K. Commeford A. J. Conant A. A. Cox D. Davee D. Dean G. Deichert M. V. Diwan M. J. Dolinski A. Erickson M. Febbraro B. T. Foust J. K. Gaison A. Galindo-Uribarri C. E. Gilbert K. E. Gilje A. Glenn B. W. Goddard B. T. Hackett K. Han S. Hans A. B. Hansell K. M. Heeger B. Heffron J. Insler D. E. Jaffe X. Ji D. C. Jones K. Koehler O. Kyzylova C. E. Lane T. J. Langford J. LaRosa B. R. Littlejohn F. Lopez X. Lu D. A. Martinez Caicedo J. T. Matta R. D. McKeown M. P. Mendenhall H. J. Miller J. M. Minock P. E. Mueller H. P. Mumm J. Napolitano R. Neilson J. A. Nikkel D. Norcini S. Nour D. A. Pushin X. Qian E. Romero-Romero R. Rosero D. Sarenac B. S. Seilhan R. Sharma P. T. Surukuchi C. Trinh M. A. Tyra R. L. Varner B. Viren J. M. Wagner W. Wang B. White C. White J. Wilhelmi T. Wise H. Yao M. Yeh Y.-R. Yen A. Zhang C. Zhang X. Zhang M. Zhao 

作者机构：Wright Laboratory Department of Physics Yale University New Haven Connecticut 06520 USA Department of Physics University of Wisconsin Madison Madison Wisconsin 53706 USA Physics Division Oak Ridge National Laboratory Oak Ridge Tennessee 37830 USA Department of Physics Le Moyne College Syracuse New York 13214 USA National Institute of Standards and Technology Gaithersburg Maryland 20899 USA Department of Physics Temple University Philadelphia Pennsylvania 19122 USA Brookhaven National Laboratory Upton New York 11973 USA Nuclear and Chemical Sciences Division Lawrence Livermore National Laboratory Livermore California 94550 USA Physical Sciences Laboratory University of Wisconsin Madison Madison Wisconsin 53706 USA High Flux Isotope Reactor Oak Ridge National Laboratory Oak Ridge Tennessee 37830 USA Department of Physics Drexel University Philadelphia Pennsylvania 19104 USA George W. Woodruff School of Mechanical Engineering Georgia Institute of Technology Atlanta Georgia 30332 USA Institute for Quantum Computing and Department of Physics and Astronomy University of Waterloo Waterloo Ontario N2L 3G1 Canada Department of Physics College of William and Mary Williamsburg Virginia 23185 USA Department of Physics and Astronomy University of Tennessee Knoxville Tennessee 37996 USA Department of Physics Illinois Institute of Technology Chicago Illinois 60616 USA 

出 版 物：《Physical Review Letters》 (物理评论快报)

年 卷 期：2018年第121卷第25期

页      面：251802-251802页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：National Science Foundation, NSF Illinois Institute of Technology, IIT U.S. Department of Energy, USDOE National Institute of Standards and Technology, NIST Canada First Research Excellence Fund, CFREF Office of Science, SC UT-Battelle Brookhaven National Laboratory, BNL High Energy Physics, HEP, (DE-SC0017660, DE-SC0016357) High Energy Physics, HEP Lawrence Livermore National Laboratory, LLNL, (DE-AC52-07NA27344) Lawrence Livermore National Laboratory, LLNL Temple University, TU, (DE-SC0012704, SCW1504) Temple University, TU Drexel University, (DE-SC0016060, DE-SC0008347) Drexel University UK Research and Innovation, UKRI, (53706) UK Research and Innovation, UKRI Heising-Simons Foundation, HSF, (2016-117) Heising-Simons Foundation, HSF Oak Ridge National Laboratory, ORNL, (DE-AC05-00OR22725) Oak Ridge National Laboratory, ORNL Yale University, (DE-SC0017815) Yale University Natural Sciences and Engineering Research Council of Canada, NSERC, (RGPIN-418579) Natural Sciences and Engineering Research Council of Canada, NSERC National Nuclear Security Administrations Office of International Nuclear Safeguards, (NA-241) 

主　　题：Neutrino oscillations Neutrino detectors Particle mixing & oscillations Scintillators 

摘      要：This Letter reports the first scientific results from the observation of antineutrinos emitted by fission products of U235 at the High Flux Isotope Reactor. PROSPECT, the Precision Reactor Oscillation and Spectrum Experiment, consists of a segmented 4 ton Li6-doped liquid scintillator detector covering a baseline range of 7–9 m from the reactor and operating under less than 1 m water equivalent overburden. Data collected during 33 live days of reactor operation at a nominal power of 85 MW yield a detection of 25 461±283 (stat) inverse beta decays. Observation of reactor antineutrinos can be achieved in PROSPECT at 5σ statistical significance within 2 h of on-surface reactor-on data taking. A reactor model independent analysis of the inverse beta decay prompt energy spectrum as a function of baseline constrains significant portions of the previously allowed sterile neutrino oscillation parameter space at 95% confidence level and disfavors the best fit of the reactor antineutrino anomaly at 2.2σ confidence level.