Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1994-12-02
Phys.Rev.Lett.74:5174-5177,1995
Physics
High Energy Physics
High Energy Physics - Phenomenology
10 pages, self-unpacking uuencoded PostScript file
Scientific paper
10.1103/PhysRevLett.74.5174
We compare the rate for elastic scattering of neutralinos from various nuclei with the flux of upward muons induced by energetic neutrinos from neutralino annihilation in the Sun and Earth. We consider both scalar and axial-vector interactions of neutralinos with nuclei. We find that the event rate in a kg of germanium is roughly equivalent to that in a $10^5$- to $10^7$-m$^2$ muon detector for a neutralino with primarily scalar coupling to nuclei. For an axially coupled neutralino, the event rate in a 50-gram hydrogen detector is roughly the same as that in a 10- to 500-m$^2$ muon detector. Expected experimental backgrounds favor forthcoming elastic-scattering detectors for scalar couplings while the neutrino detectors have the advantage for axial-vector couplings.
Griest Kim
Jungman Gerard
Kamionkowski Marc
Sadoulet Bernard
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