How suppressed are the radiative interference effects in heavy unstable particle production?
arXiv:hep-ph/9309234 · doi:10.1016/0370-2693(94)90837-0
Abstract
We present a \lq\lq theorem" which quantifies, for inclusive processes, the level of suppression of the radiative interference effects between the production and decay stages of heavy {\it unstable} particles. The theorem, which is based on very general physical arguments, is applicable to all orders in the coupling.
6 pages (Latex) (no figures), DTP/93/64