Chargino production at LEP2 in a supergravity model

In the framework of a particular supergravity model which provides a natural solution to the μ-problem we show how the discovery of a chargino at LEP2 and the measurement of its mass and production cross-section, together with the measurement of the mass of the lightest neutralino, would determine the entire Higgs and SUSY spectrum. We give detailed predictions for the Higgs and SUSY spectrum as a function of the chargino production cross-section, for constant values of the lightest chargino and gluino masses.