Results are reported from an improved measurement of ν_{μ}→ν_{e} transitions by the NOvA experiment. Using an exposure equivalent to 6.05×10^{20} protons on target, 33 ν_{e} candidates are observed with a background of 8.2±0.8 (syst.). Combined with the latest NOvA ν_{μ} disappearance data and external constraints from reactor experiments on sin^{2}2θ_{13}, the hypothesis of inverted mass hierarchy with θ_{23} in the lower octant is disfavored at greater than 93% C.L. for all values of δ_{CP}.

Argonne National Laboratory Argonne Illinois 60439 USA

California Institute of Technology Pasadena California 91125 USA

Charles University Faculty of Mathematics and Physics Institute of Particle and Nuclear Physics 116 36 Prague Czech Republic

Czech Technical University Prague Brehova 7 115 19 Prague 1 Czech Republic

Department of Mathematics Statistics and Physics Wichita State University Wichita Kansas 67206 USA

Department of Physics and Astronomy Iowa State University Ames Iowa 50011 USA

Department of Physics and Astronomy Michigan State University East Lansing Michigan 48824 USA

Department of Physics and Astronomy Tufts University Medford Massachusetts 02155 USA

Department of Physics and Astronomy University of California at Irvine Irvine California 92697 USA

Department of Physics and Astronomy University of Minnesota Duluth Duluth Minnesota 55812 USA

Department of Physics and Astronomy University of South Carolina Columbia South Carolina 29208 USA

Department of Physics and Astronomy University of Sussex Falmer Brighton BN1 9QH United Kingdom

Department of Physics and Astronomy University of Tennessee Knoxville Tennessee 37996 USA

Department of Physics and Astrophysics University of Delhi Delhi 110007 India

Department of Physics and Electronics University of Jammu Jammu Tawi 180 006 Jammu and Kashmir India

Department of Physics Cochin University of Science and Technology Kochi 682 022 India

Department of Physics College of William and Mary Williamsburg Virginia 23187 USA

Department of Physics Colorado State University Fort Collins Colorado 80523 1875 USA

Department of Physics Harvard University Cambridge Massachusetts 02138 USA

Department of Physics IIT Guwahati Guwahati 781 039 India

Department of Physics IIT Hyderabad Hyderabad 502 205 India

Department of Physics Institute of Science Banaras Hindu University Varanasi 221 005 India

Department of Physics Panjab University Chandigarh 106 014 India

Department of Physics Southern Methodist University Dallas Texas 75275 USA

Department of Physics Stanford University Stanford California 94305 USA

Department of Physics University of Cincinnati Cincinnati Ohio 45221 USA

Department of Physics University of South Alabama Mobile Alabama 36688 USA

Department of Physics University of Texas at Austin Austin Texas 78712 USA

Department of Physics University of Virginia Charlottesville Virginia 22904 USA

Department of Physics Winona State University P O Box 5838 Winona Minnesota 55987 USA

Fermi National Accelerator Laboratory Batavia Illinois 60510 USA

Indiana University Bloomington Indiana 47405 USA

Institute for Nuclear Research of Russia Academy of Sciences 7a 60th October Anniversary prospect Moscow 117312 Russia

Institute of Physics The Czech Academy of Sciences 182 21 Prague Czech Republic

Instituto de Física Universidade Federal de Goiás Goiânia Goiás 74690 900 Brazil

Joint Institute for Nuclear Research Dubna Moscow region 141980 Russia

Nuclear Physics Department Lebedev Physical Institute Leninsky Prospect 53 119991 Moscow Russia

Physics and Astronomy Department University College London Gower Street London WC1E 6BT United Kingdom

School of Physics and Astronomy University of Minnesota Twin Cities Minneapolis Minnesota 55455 USA

School of Physics University of Hyderabad Hyderabad 500 046 India

South Dakota School of Mines and Technology Rapid City South Dakota 57701 USA

Citace poskytuje Crossref.org

Prospects for beyond the Standard Model physics searches at the Deep Underground Neutrino Experiment: DUNE Collaboration