Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-11-04
Astronomy and Astrophysics
Astrophysics
10 LaTex pages, 4 figures, 2 tables. Talk presnted to Dark2004 (to appear in the proceedings by Springer-Verlag)
Scientific paper
Since the expected rates for neutralino-nucleus scattering are expected to be small, one should exploit all the characteristic signatures of this reaction. Such are: (i) In the standard recoil measurements the modulation of the event rate due to the Earth's motion. (ii) In directional recoil experiments the correlation of the event rate with the sun's motion. One now has both modulation, which is much larger and depends not only on time, but on the direction of observation as well, and a large forward-backward asymmetry. (iii) In non recoil experiments gamma rays following the decay of excited states populated during the Nucleus-LSP collision. Branching ratios of about 6 percent are possible %and (ii) Direct detection of ionization electrons %with branching ratio with respect to the standard recoil of about 10 per cent. (iv) novel experiments in which one observes the electrons produced during the collision of the LSP with the nucleus. Branching ratios of about 10 per cent are possible.
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