Resummation and simulation of soft gluon effects beyond leading colour

Understand

We present first results of resumming soft gluon effects in a simulation of high energy collisions beyond the leading-colour approximation.

• We work to all orders in QCD perturbation theory using a new parton branching algorithm.
• This amplitude evolution algorithm resembles a parton shower that is able to systematically include colour-suppressed terms.
• We find that colour suppressed terms can significantly contribute to jet veto cross sections.