Vs. Fadin et al., HOW SUPPRESSED ARE THE RADIATIVE INTERFERENCE EFFECTS IN HEAVY UNSTABLE PARTICLE-PRODUCTION, Physics letters. Section B, 320(1-2), 1994, pp. 141-144
We present a ''theorem'' which quantifies, for inclusive processes, th
e level of suppression of the radiative interference effects between t
he production and decay stages of heavy unstable particles. The theore
m, which is based on very general physical arguments, is applicable to
all orders in the coupling.