A dark matter (DM) search experiment was flown on the IMAX balloon payload to search for a possible minor component of the dark matter in the Galactic halo: ionizing massive particles (IMPs) (mx≳104 GeV/c2) that cannot penetrate the atmosphere due to their low‐velocities and high energy‐loss. The DM search experiment consisted of a delayed coincidence between four large plastic scintillation detectors arranged in a vertical stack. In order to search for ultra‐slow particles which do not slow down in the IMAX telescope, the experiment contained TDCs which measured the time‐delay Ti,i+1∈(0.3, 14.0) μs between hits in successive counters to ∼2% precision. We present IMP flux limits for non‐slowing IMPs and also for IMPs which slow down significantly within the IMAX telescope. This experiment effectively closes much of a previously unconstrained ‘‘window’’ in the mass/cross‐section joint parameter spaces for massive particles as the dominant halo DM.
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July 01 1995
Balloon‐borne direct search for ionizing massive particles as a component of the galactic halo dark matter (The Arizona‐IMAX Collaboration)
P. C. McGuire;
P. C. McGuire
Department of Physics, University of Arizona, Tucson, Arizona 85721
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T. Bowen;
T. Bowen
Department of Physics, University of Arizona, Tucson, Arizona 85721
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D. L. Barker;
D. L. Barker
Department of Physics, University of Arizona, Tucson, Arizona 85721
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P. G. Halverson;
P. G. Halverson
Department of Physics, University of Arizona, Tucson, Arizona 85721
Physics Department, University of California at Irvine, Irvine, California 92717
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K. R. Kendall;
K. R. Kendall
Department of Physics, University of Arizona, Tucson, Arizona 85721
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T. S. Metcalfe;
T. S. Metcalfe
Department of Physics, University of Arizona, Tucson, Arizona 85721
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R. S. Norton;
R. S. Norton
Department of Physics, University of Arizona, Tucson, Arizona 85721
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A. E. Pifer;
A. E. Pifer
Department of Physics, University of Arizona, Tucson, Arizona 85721
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L. M. Barbier;
L. M. Barbier
Laboratory for High Energy Astrophysics, NASA/GSFC, Greenbelt, Maryland 20771
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E. R. Christian;
E. R. Christian
Laboratory for High Energy Astrophysics, NASA/GSFC, Greenbelt, Maryland 20771
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K. E. Krombel;
K. E. Krombel
Laboratory for High Energy Astrophysics, NASA/GSFC, Greenbelt, Maryland 20771
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J. W. Mitchell;
J. W. Mitchell
Laboratory for High Energy Astrophysics, NASA/GSFC, Greenbelt, Maryland 20771
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J. F. Ormes;
J. F. Ormes
Laboratory for High Energy Astrophysics, NASA/GSFC, Greenbelt, Maryland 20771
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R. E. Streitmatter;
R. E. Streitmatter
Laboratory for High Energy Astrophysics, NASA/GSFC, Greenbelt, Maryland 20771
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A. J. Davis;
A. J. Davis
Space Radiation Laboratory, California Institute of Technology, Pasadena, California 91125
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A. W. Labrador;
A. W. Labrador
Space Radiation Laboratory, California Institute of Technology, Pasadena, California 91125
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R. A. Mewaldt;
R. A. Mewaldt
Space Radiation Laboratory, California Institute of Technology, Pasadena, California 91125
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S. M. Schindler;
S. M. Schindler
Space Radiation Laboratory, California Institute of Technology, Pasadena, California 91125
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R. L. Golden;
R. L. Golden
Particle Astrophysics Laboratory, New Mexico State University, Las Cruces, New Mexico 88003
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S. J. Stochaj;
S. J. Stochaj
Particle Astrophysics Laboratory, New Mexico State University, Las Cruces, New Mexico 88003
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W. R. Webber
W. R. Webber
Particle Astrophysics Laboratory, New Mexico State University, Las Cruces, New Mexico 88003
Astronomy Department, New Mexico State University, Las Cruces, New Mexico 88003
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AIP Conf. Proc. 336, 53–56 (1995)
Citation
P. C. McGuire, T. Bowen, D. L. Barker, P. G. Halverson, K. R. Kendall, T. S. Metcalfe, R. S. Norton, A. E. Pifer, L. M. Barbier, E. R. Christian, K. E. Krombel, J. W. Mitchell, J. F. Ormes, R. E. Streitmatter, A. J. Davis, A. W. Labrador, R. A. Mewaldt, S. M. Schindler, R. L. Golden, S. J. Stochaj, W. R. Webber; Balloon‐borne direct search for ionizing massive particles as a component of the galactic halo dark matter (The Arizona‐IMAX Collaboration). AIP Conf. Proc. 1 July 1995; 336 (1): 53–56. https://doi.org/10.1063/1.48386
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