New Results from the Search for Low-Mass Weakly Interacting Massive Particles with the CDMS Low Ionization Threshold Experiment.

Autor: Agnese R; Department of Physics, University of Florida, Gainesville, Florida 32611, USA., Anderson AJ; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA., Aramaki T; SLAC National Accelerator Laboratory/Kavli Institute for Particle Astrophysics and Cosmology, 2575 Sand Hill Road, Menlo Park, California 94025, USA., Asai M; SLAC National Accelerator Laboratory/Kavli Institute for Particle Astrophysics and Cosmology, 2575 Sand Hill Road, Menlo Park, California 94025, USA., Baker W; Department of Physics and Astronomy, and the Mitchell Institute for Fundamental Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA., Balakishiyeva D; Department of Physics, University of Florida, Gainesville, Florida 32611, USA., Barker D; School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA., Basu Thakur R; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.; Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA., Bauer DA; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA., Billard J; Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA., Borgland A; SLAC National Accelerator Laboratory/Kavli Institute for Particle Astrophysics and Cosmology, 2575 Sand Hill Road, Menlo Park, California 94025, USA., Bowles MA; Department of Physics, Syracuse University, Syracuse, New York 13244, USA., Brink PL; SLAC National Accelerator Laboratory/Kavli Institute for Particle Astrophysics and Cosmology, 2575 Sand Hill Road, Menlo Park, California 94025, USA., Bunker R; Department of Physics, South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA., Cabrera B; Department of Physics, Stanford University, Stanford, California 94305, USA., Caldwell DO; Department of Physics, University of California, Santa Barbara, California 93106, USA., Calkins R; Department of Physics, Southern Methodist University, Dallas, Texas 75275, USA., Cerdeno DG; Institute for Particle Physics Phenomenology, Department of Physics, Durham University, Durham DH1 3LE, United Kingdom., Chagani H; School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA., Chen Y; Department of Physics, Syracuse University, Syracuse, New York 13244, USA., Cooley J; Department of Physics, Southern Methodist University, Dallas, Texas 75275, USA., Cornell B; Division of Physics, Mathematics and Astronomy, California Institute of Technology, Pasadena, California 91125, USA., Cushman P; School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA., Daal M; Department of Physics, University of California, Berkeley, California 94720, USA., Di Stefano PC; Department of Physics, Queen's University, Kingston, Ontario K7L 3N6, Canada., Doughty T; Department of Physics, University of California, Berkeley, California 94720, USA., Esteban L; Departamento de Física Teórica and Instituto de Física Teórica UAM/CSIC, Universidad Autónoma de Madrid, 28049 Madrid, Spain., Fallows S; School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA., Figueroa-Feliciano E; Department of Physics & Astronomy, Northwestern University, Evanston, Illinois 60208-3112, USA., Ghaith M; Department of Physics, Queen's University, Kingston, Ontario K7L 3N6, Canada., Godfrey GL; SLAC National Accelerator Laboratory/Kavli Institute for Particle Astrophysics and Cosmology, 2575 Sand Hill Road, Menlo Park, California 94025, USA., Golwala SR; Division of Physics, Mathematics and Astronomy, California Institute of Technology, Pasadena, California 91125, USA., Hall J; Pacific Northwest National Laboratory, Richland, Washington 99352, USA., Harris HR; Department of Physics and Astronomy, and the Mitchell Institute for Fundamental Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA., Hofer T; School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA., Holmgren D; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA., Hsu L; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA., Huber ME; Department of Physics, University of Colorado Denver, Denver, Colorado 80217, USA., Jardin D; Department of Physics, Southern Methodist University, Dallas, Texas 75275, USA., Jastram A; Department of Physics and Astronomy, and the Mitchell Institute for Fundamental Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA., Kamaev O; Department of Physics, Queen's University, Kingston, Ontario K7L 3N6, Canada., Kara B; Department of Physics, Southern Methodist University, Dallas, Texas 75275, USA., Kelsey MH; SLAC National Accelerator Laboratory/Kavli Institute for Particle Astrophysics and Cosmology, 2575 Sand Hill Road, Menlo Park, California 94025, USA., Kennedy A; School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA., Leder A; Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA., Loer B; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA., Lopez Asamar E; Departamento de Física Teórica and Instituto de Física Teórica UAM/CSIC, Universidad Autónoma de Madrid, 28049 Madrid, Spain., Lukens P; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA., Mahapatra R; Department of Physics and Astronomy, and the Mitchell Institute for Fundamental Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA., Mandic V; School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA., Mast N; School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA., Mirabolfathi N; Department of Physics, University of California, Berkeley, California 94720, USA., Moffatt RA; Department of Physics, Stanford University, Stanford, California 94305, USA., Morales Mendoza JD; Department of Physics and Astronomy, and the Mitchell Institute for Fundamental Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA., Oser SM; Department of Physics & Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada., Page K; Department of Physics, Queen's University, Kingston, Ontario K7L 3N6, Canada., Page WA; Department of Physics & Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada., Partridge R; SLAC National Accelerator Laboratory/Kavli Institute for Particle Astrophysics and Cosmology, 2575 Sand Hill Road, Menlo Park, California 94025, USA., Pepin M; School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA., Phipps A; Department of Physics, University of California, Berkeley, California 94720, USA., Prasad K; Department of Physics and Astronomy, and the Mitchell Institute for Fundamental Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA., Pyle M; Department of Physics, University of California, Berkeley, California 94720, USA., Qiu H; Department of Physics, Southern Methodist University, Dallas, Texas 75275, USA., Rau W; Department of Physics, Queen's University, Kingston, Ontario K7L 3N6, Canada., Redl P; Department of Physics, Stanford University, Stanford, California 94305, USA., Reisetter A; Department of Physics, University of Evansville, Evansville, Indiana 47722, USA., Ricci Y; Department of Physics, Queen's University, Kingston, Ontario K7L 3N6, Canada., Roberts A; Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA., Rogers HE; School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA., Saab T; Department of Physics, University of Florida, Gainesville, Florida 32611, USA., Sadoulet B; Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.; Department of Physics, University of California, Berkeley, California 94720, USA., Sander J; Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA., Schneck K; SLAC National Accelerator Laboratory/Kavli Institute for Particle Astrophysics and Cosmology, 2575 Sand Hill Road, Menlo Park, California 94025, USA., Schnee RW; Department of Physics, South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA., Scorza S; Department of Physics, Southern Methodist University, Dallas, Texas 75275, USA., Serfass B; Department of Physics, University of California, Berkeley, California 94720, USA., Shank B; Department of Physics, Stanford University, Stanford, California 94305, USA., Speller D; Department of Physics, University of California, Berkeley, California 94720, USA., Toback D; Department of Physics and Astronomy, and the Mitchell Institute for Fundamental Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA., Underwood R; Department of Physics, Queen's University, Kingston, Ontario K7L 3N6, Canada., Upadhyayula S; Department of Physics and Astronomy, and the Mitchell Institute for Fundamental Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA., Villano AN; School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA., Welliver B; Department of Physics, University of Florida, Gainesville, Florida 32611, USA., Wilson JS; Department of Physics and Astronomy, and the Mitchell Institute for Fundamental Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA., Wright DH; SLAC National Accelerator Laboratory/Kavli Institute for Particle Astrophysics and Cosmology, 2575 Sand Hill Road, Menlo Park, California 94025, USA., Yellin S; Department of Physics, Stanford University, Stanford, California 94305, USA., Yen JJ; Department of Physics, Stanford University, Stanford, California 94305, USA., Young BA; Department of Physics, Santa Clara University, Santa Clara, California 95053, USA., Zhang J; School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA.
Jazyk: angličtina
Zdroj: Physical review letters [Phys Rev Lett] 2016 Feb 19; Vol. 116 (7), pp. 071301. Date of Electronic Publication: 2016 Feb 17.
DOI: 10.1103/PhysRevLett.116.071301
Abstrakt: The CDMS low ionization threshold experiment (CDMSlite) uses cryogenic germanium detectors operated at a relatively high bias voltage to amplify the phonon signal in the search for weakly interacting massive particles (WIMPs). Results are presented from the second CDMSlite run with an exposure of 70 kg day, which reached an energy threshold for electron recoils as low as 56 eV. A fiducialization cut reduces backgrounds below those previously reported by CDMSlite. New parameter space for the WIMP-nucleon spin-independent cross section is excluded for WIMP masses between 1.6 and 5.5  GeV/c^{2}.
Databáze: MEDLINE