Mass formula for Einstein-Yang-Mills solitons - art. no. 107501

The isolated horizon formalism, together with a simple phenomenological mod el for colored black holes was recently used to predict a formula for the A DM mass of the solitons of the EYM system in terms of horizon properties of black holes for all values of the horizon area. In this Brief Report, this formula, is tested numerically-up to a large value of the area-for spheric ally symmetric solutions and shown to yield the known masses of the soliton s.