Soft Gluon Radiation in Hadronic $t\bar{t}$ Production

We investigate soft gluon radiation in hadronic $t\bar{t}$ production. By taking the top quark decay properly into account, we are able to study the interplay of radiation both before and after the decay of the top quarks. The production–decay and decay–decay radiative interferences depend sensitively on the relative size of the gluon energy and the decay width. Radiation patterns for various production mechanisms are compared.