  A statistical model for decay and formation of heavy hadronic resonances is
formulated. The resonance properties become increasingly uncertain with
increasing resonance mass. Drawing on analogy with the situation in low-energy
nuclear physics, we employ the Weisskopf approach to the resonance processes.
In the large-mass limit, the density of resonance states in mass is governed by
a universal Hagedorn-like temperature T_H. As resonances decay, progressively
more and more numerous lighter states get populated. For T_H \simeq 170 MeV,
the model describes data for the hadron yield ratios at the RHIC and SPS
energies under the extreme assumption of a single heavy resonance giving rise
to measured yields.
