Limits on the WIMP-Nucleon Coupling Coefficients from Dark Matter Search Experiment with NaF Bolometer

Details Limits on the WIMP-Nucleon Coupling Coefficients from Dark Matter Search Experiment with NaF Bolometer Limits on the WIMP-Nucleon Coupling Coefficients from Dark Matter Search Experiment with NaF Bolometer

2003-06-18

arxiv.org/abs/astro-ph/0306365v3

Phys.Lett.B572:145-151,2003

Astronomy and Astrophysics

Astrophysics

10 pages, 4 figures

Scientific paper

10.1016/j.physletb.2003.07.090

We have performed the underground dark matter search experiment with a sodium fl uoride (NaF) bolometer array from 2002 through 2003 at Kamioka Observatory (2700 m.w.e.). The bolometer array consists of eight NaF absorbers with a total mass of 176 g, and sensitive NTD germanium thermistors glued to each of them. This experiment aims for the direct detection of weakly interacting massive part icles (WIMPs) via spin-dependent interaction. With an exposure of 3.38 kg days, we derived the limits on the WIMP-n ucleon coupling coefficients, a_p and a_n. These limits confirmed and tightened those derived from our previous results wit h the lithium fluoride (LiF) bolometer. Our results excluded the parameter space complementary to the results obtained b y NaI detectors of UKDMC experiment.

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