First Dark Matter Search Results from the LUX-ZEPLIN (LZ) Experiment
Affiliations
- 1 SLAC National Accelerator Laboratory, Menlo Park, California 94025-7015, USA.
- 2 Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, Stanford, California 94305-4085 USA.
- 3 University of Michigan, Randall Laboratory of Physics, Ann Arbor, Michigan 48109-1040, USA.
- 4 University of Oxford, Department of Physics, Oxford OX1 3RH, United Kingdom.
- 5 University College London (UCL), Department of Physics and Astronomy, London WC1E 6BT, United Kingdom.
- 6 Brown University, Department of Physics, Providence, Rhode Island 02912-9037, USA.
- 7 University of Wisconsin-Madison, Department of Physics, Madison, Wisconsin 53706-1390, USA.
- 8 Imperial College London, Physics Department, Blackett Laboratory, London SW7 2AZ, United Kingdom.
- 9 University of Maryland, Department of Physics, College Park, Maryland 20742-4111, USA.
- 10 University of California, Santa Barbara, Department of Physics, Santa Barbara, California 93106-9530, USA.
- 11 University of California, Davis, Department of Physics, Davis, California 95616-5270, USA.
- 12 STFC Rutherford Appleton Laboratory (RAL), Didcot, OX11 0QX, United Kingdom.
- 13 Lawrence Berkeley National Laboratory (LBNL), Berkeley, California 94720-8099, USA.
- 14 South Dakota Science and Technology Authority (SDSTA), Sanford Underground Research Facility, Lead, South Dakota 57754-1700, USA.
- 15 University of Liverpool, Department of Physics, Liverpool L69 7ZE, United Kingdom.
- 16 Fermi National Accelerator Laboratory (FNAL), Batavia, Illinois 60510-5011, USA.
- 17 University of Edinburgh, SUPA, School of Physics and Astronomy, Edinburgh EH9 3FD, United Kingdom.
- 18 Brandeis University, Department of Physics, Waltham, Massachusetts 02453, USA.
- 19 University of California, Berkeley, Department of Physics, Berkeley, California 94720-7300, USA.
- 20 University at Albany (SUNY), Department of Physics, Albany, New York 12222-0100, USA.
- 21 Laboratório de Instrumentação e Física Experimental de Partículas (LIP), University of Coimbra, P-3004 516 Coimbra, Portugal.
- 22 Washington University in St. Louis, Department of Physics, St. Louis, Missouri 63130-4862, USA.
- 23 University of Alabama, Department of Physics and Astronomy, Tuscaloosa, Alabama 34587-0324, USA.
- 24 Pennsylvania State University, Department of Physics, University Park, Pennsylvania 16802-6300, USA.
- 25 Royal Holloway, University of London, Department of Physics, Egham, TW20 0EX, United Kingdom.
- 26 South Dakota School of Mines and Technology, Rapid City, South Dakota 57701-3901, USA.
- 27 University of Rochester, Department of Physics and Astronomy, Rochester, New York 14627-0171, USA.
- 28 Northwestern University, Department of Physics & Astronomy, Evanston, Illinois 60208-3112, USA.
- 29 Yale University, Department of Physics, New Haven, Connecticut 06511-8499, USA.
- 30 University of Bristol, H.H. Wills Physics Laboratory, Bristol, BS8 1TL, United Kingdom.
- 31 Brookhaven National Laboratory (BNL), Upton, New York 11973-5000, USA.
- 32 University of Massachusetts, Department of Physics, Amherst, Massachusetts 01003-9337, USA.
- 33 University of Califonia, Los Angeles, Department of Physics and Astronomy, Los Angeles, California 90095-1547.
- 34 Lawrence Livermore National Laboratory (LLNL), Livermore, California 94550-9698, USA.
- 35 IBS Center for Underground Physics (CUP), Yuseong-gu, Daejeon, Korea.
- 36 University of Sheffield, Department of Physics and Astronomy, Sheffield S3 7RH, United Kingdom.
- 37 Vatican Observatory, Castel Gandolfo, V-00120, Vatican City State.
- 38 Black Hills State University, School of Natural Sciences, Spearfish, South Dakota 57799-0002, USA.
- 39 Texas A&M University, Department of Physics and Astronomy, College Station, Texas 77843-4242, USA.
- PMID: 37566836
- DOI: 10.1103/PhysRevLett.131.041002
First Dark Matter Search Results from the LUX-ZEPLIN (LZ) Experiment
Authors
Affiliations
- 1 SLAC National Accelerator Laboratory, Menlo Park, California 94025-7015, USA.
- 2 Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, Stanford, California 94305-4085 USA.
- 3 University of Michigan, Randall Laboratory of Physics, Ann Arbor, Michigan 48109-1040, USA.
- 4 University of Oxford, Department of Physics, Oxford OX1 3RH, United Kingdom.
- 5 University College London (UCL), Department of Physics and Astronomy, London WC1E 6BT, United Kingdom.
- 6 Brown University, Department of Physics, Providence, Rhode Island 02912-9037, USA.
- 7 University of Wisconsin-Madison, Department of Physics, Madison, Wisconsin 53706-1390, USA.
- 8 Imperial College London, Physics Department, Blackett Laboratory, London SW7 2AZ, United Kingdom.
- 9 University of Maryland, Department of Physics, College Park, Maryland 20742-4111, USA.
- 10 University of California, Santa Barbara, Department of Physics, Santa Barbara, California 93106-9530, USA.
- 11 University of California, Davis, Department of Physics, Davis, California 95616-5270, USA.
- 12 STFC Rutherford Appleton Laboratory (RAL), Didcot, OX11 0QX, United Kingdom.
- 13 Lawrence Berkeley National Laboratory (LBNL), Berkeley, California 94720-8099, USA.
- 14 South Dakota Science and Technology Authority (SDSTA), Sanford Underground Research Facility, Lead, South Dakota 57754-1700, USA.
- 15 University of Liverpool, Department of Physics, Liverpool L69 7ZE, United Kingdom.
- 16 Fermi National Accelerator Laboratory (FNAL), Batavia, Illinois 60510-5011, USA.
- 17 University of Edinburgh, SUPA, School of Physics and Astronomy, Edinburgh EH9 3FD, United Kingdom.
- 18 Brandeis University, Department of Physics, Waltham, Massachusetts 02453, USA.
- 19 University of California, Berkeley, Department of Physics, Berkeley, California 94720-7300, USA.
- 20 University at Albany (SUNY), Department of Physics, Albany, New York 12222-0100, USA.
- 21 Laboratório de Instrumentação e Física Experimental de Partículas (LIP), University of Coimbra, P-3004 516 Coimbra, Portugal.
- 22 Washington University in St. Louis, Department of Physics, St. Louis, Missouri 63130-4862, USA.
- 23 University of Alabama, Department of Physics and Astronomy, Tuscaloosa, Alabama 34587-0324, USA.
- 24 Pennsylvania State University, Department of Physics, University Park, Pennsylvania 16802-6300, USA.
- 25 Royal Holloway, University of London, Department of Physics, Egham, TW20 0EX, United Kingdom.
- 26 South Dakota School of Mines and Technology, Rapid City, South Dakota 57701-3901, USA.
- 27 University of Rochester, Department of Physics and Astronomy, Rochester, New York 14627-0171, USA.
- 28 Northwestern University, Department of Physics & Astronomy, Evanston, Illinois 60208-3112, USA.
- 29 Yale University, Department of Physics, New Haven, Connecticut 06511-8499, USA.
- 30 University of Bristol, H.H. Wills Physics Laboratory, Bristol, BS8 1TL, United Kingdom.
- 31 Brookhaven National Laboratory (BNL), Upton, New York 11973-5000, USA.
- 32 University of Massachusetts, Department of Physics, Amherst, Massachusetts 01003-9337, USA.
- 33 University of Califonia, Los Angeles, Department of Physics and Astronomy, Los Angeles, California 90095-1547.
- 34 Lawrence Livermore National Laboratory (LLNL), Livermore, California 94550-9698, USA.
- 35 IBS Center for Underground Physics (CUP), Yuseong-gu, Daejeon, Korea.
- 36 University of Sheffield, Department of Physics and Astronomy, Sheffield S3 7RH, United Kingdom.
- 37 Vatican Observatory, Castel Gandolfo, V-00120, Vatican City State.
- 38 Black Hills State University, School of Natural Sciences, Spearfish, South Dakota 57799-0002, USA.
- 39 Texas A&M University, Department of Physics and Astronomy, College Station, Texas 77843-4242, USA.
- PMID: 37566836
- DOI: 10.1103/PhysRevLett.131.041002
Abstract
The LUX-ZEPLIN experiment is a dark matter detector centered on a dual-phase xenon time projection chamber operating at the Sanford Underground Research Facility in Lead, South Dakota, USA. This Letter reports results from LUX-ZEPLIN's first search for weakly interacting massive particles (WIMPs) with an exposure of 60 live days using a fiducial mass of 5.5 t. A profile-likelihood ratio analysis shows the data to be consistent with a background-only hypothesis, setting new limits on spin-independent WIMP-nucleon, spin-dependent WIMP-neutron, and spin-dependent WIMP-proton cross sections for WIMP masses above 9 GeV/c^{2}. The most stringent limit is set for spin-independent scattering at 36 GeV/c^{2}, rejecting cross sections above 9.2×10^{-48} cm at the 90% confidence level.
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