We use the theory of Yennie, Frautschi, and Suura to realize, via Monte Carlo methods, the process $f\stackrel{\left(¯\right)}{f}\to f^{\prime }{\stackrel{\left(¯\right)}{f}}^{\prime }+n\gamma$ at energies reached at the Superconducting Super Collider (SSC) and the CERN Large Hadron Collider, where $f$ and $f^{\prime }$ are quarks or leptons. QED infrared divergences are canceled to all orders in perturbation theory. The resulting Monte Carlo event generator SSC-YFS2 is used to study the effects of initial-state photon radiation on these processes in the SSC environment. Sample Monte Carlo data are presented and discussed. We find that the respective multiple-photon effects must be taken into account in discussing precise predictions for SSC physics processes.

• Received 12 March 1992

DOI:https://doi.org/10.1103/PhysRevD.47.853