Out-going Muon Flux from Neutralino Annihilation in the Sun and the Earth in Supergravity Unification

Abstract

Predictions for the out-going muon fluxes from the annihilation of neutralinos in the center of the Sun and the Earth in supergravity unification are given. Effects of uncertainties of the input data are analysed. It is shown that the out-going muon flux measurements from the Sun and the Earth are complementary, with the Earth providing a larger flux for low values of fine tuning and the Sun providing a larger flux for high values of fine tuning, and that only a combination of the two can compete favorably with the direct detection measurements. The predictions are compared with the recent limits from BAIKAL NT-96, MACRO, and BAKSAN.