Encoding off-shell effects in top pair production in Direct Diffusion networks

Abstract

To meet the precision targets of upcoming LHC runs in the simulation of top pair production events it is essential to also consider off-shell effects. Due to their great computational cost I propose to encode them in neural networks. For that I use a combination of neural networks that take events with approximate off-shell effects and transform them into events that match those obtained with full off-shell calculations. This was shown to work reliably and efficiently at leading order. Here I discuss first steps extending this method to include higher order effects.

Comments: Talk at the 17th International Workshop on Top Quark Physics (Top2024), 22-27 September 2024