ON THE RELATIONSHIP OF THE SCALED PHASE-SPACE AND SKYRME-COHERENT STATE TREATMENTS OF PROTON-ANTIPROTON ANNIHILATION AT REST

We discuss pion multiplicities and single pion momentum spectra from p roton antiproton annihilation at rest. Both the scaled phase space mod el and the Skyrme-coherent state approach describe these observables w ell. In the coherent state approach the puzzling size of the scale par ameter relating the phase space integrals for different multiplicities is replaced by a well defined weight function. The strength of this f unction is determined by the intensity of the classical pion field and its spatial extent is of order 1 fm.