Event generation with Sherpa 3

Enrico Bothmann, Lois Flower, Christian Gütschow, Stefan Höche, Mareen Hoppe, Joshua Isaacson, Max Knobbe, Frank Krauss, Peter Meinzinger, Davide Napoletano, Alan Price, Daniel Reichelt, Marek Schönherr, Steffen Schumann, Frank Siegert

Published 2024-10-29Version 1

Sherpa is a general-purpose Monte Carlo event generator for the simulation of particle collisions in high-energy collider experiments. We summarise new developments, essential features, and ongoing improvements within the Sherpa 3 release series. Physics improvements include higher-order electroweak corrections, simulations of photoproduction and hard diffraction at NLO QCD, heavy-flavour matching in NLO multijet merging, spin-polarised cross section calculations, and a new model of colour reconnections. In addition, the modelling of hadronisation, the underlying event and QED effects in both production and decay has been improved, and the overall event generation efficiency has been enhanced.