Bulletin of the American Physical Society
2009 APS April Meeting
Volume 54, Number 4
Saturday–Tuesday, May 2–5, 2009; Denver, Colorado
Session R4: Dark Matter |
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Sponsoring Units: DAP DPF Chair: Steven Kahn, Stanford Linear Accelerator Center Room: Plaza F |
Monday, May 4, 2009 1:30PM - 2:06PM |
R4.00001: A DEAP \& CLEAN Program for the Direct Detection of Dark Matter Invited Speaker: On behalf of the DEAP/CLEAN Collaboration, I will discuss our efforts to exploit liquid argon (LAr) and liquid neon (LNe) in a single-phase, scintillation detector for the direct detection of dark matter and low-energy solar neutrinos. The unique properties of LAr and LNe allow for a conceptually simple, economic, and scalable detector when operated in the single phase. Target exchange between LAr and LNe allows the capability of a ``Beam On - Beam Off" test of a positive dark matter signal versus some unknown source of background. At the multi-ton scale, the single-phase approach offers unprecedented sensitivity to WIMP dark matter and the simultaneous detection of the dominant and low-energy (pp-fusion) solar neutrino spectrum. I will discuss this program, including a status report from DEAP-1 presently operating underground at SNOLAB, our plans to construct and commission the Mini-CLEAN detector, and our vision to move to the multi-ton target scale. This presentation will be complemented by a number of contributed papers. [Preview Abstract] |
Monday, May 4, 2009 2:06PM - 2:42PM |
R4.00002: Studies of cosmic antiparticles with PAMELA Invited Speaker: The PAMELA satellite experiment was launched into low earth orbit on June 15th 2006. The combination of a permanent magnet silicon strip spectrometer, and a silicon-tungsten imaging calorimeter allows precision studies of the charged cosmic radiation to be conducted over a wide energy range ($\sim $100 MeV - $\sim $200 GeV). A primary scientific goal is to search for dark matter particle annihilations by measuring the energy spectra of cosmic ray antiparticles. Recent results from the PAMELA experiment will be reviewed with a particular focus on cosmic ray antiprotons and positrons. [Preview Abstract] |
Monday, May 4, 2009 2:42PM - 3:18PM |
R4.00003: The Hunt for Dark Matter Invited Speaker: For seventy years, we have had evidence that much of the Universe's mass is non-luminous, but still today we have not identified what makes up this mysteriously dark substance. Many experimental programs are underway, however, which hope to change this state of affairs. Deep underground detectors, gamma-ray telescopes, neutrino and cosmic ray detectors, as well as particle colliders, each are searching for clues of dark matter's identity. Possibile dark matter candidates include supersymmetric particles or even ordinary particles traveling through extra dimensions of space. With the new technologies needed to observe these particles rapidly developing, the hunt to discover dark matter's identity has now truly begun. [Preview Abstract] |
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