European Physical Journal C: Particles and Fields (May 2020)

Herwig 7.2 release note

  • Johannes Bellm,
  • Gavin Bewick,
  • Silvia Ferrario Ravasio,
  • Stefan Gieseke,
  • David Grellscheid,
  • Patrick Kirchgaeßer,
  • Frashër Loshaj,
  • Mohammad R. Masouminia,
  • Graeme Nail,
  • Andreas Papaefstathiou,
  • Simon Plätzer,
  • Radek Podskubka,
  • Michael Rauch,
  • Christian Reuschle,
  • Peter Richardson,
  • Peter Schichtel,
  • Michael H. Seymour,
  • Andrzej Siódmok,
  • Stephen Webster

DOI
https://doi.org/10.1140/epjc/s10052-020-8011-x
Journal volume & issue
Vol. 80, no. 5
pp. 1 – 13

Abstract

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Abstract A new release of the Monte Carlo event generator Herwig (version 7.2) is now available. This version introduces a number of improvements over the major version 7.0, notably: multi-jet merging with the dipole shower at LO and NLO QCD; spin correlations in both the dipole and angular-ordered parton showers; an improved choice of evolution variable in the angular-ordered parton shower; improvements to mass effects and top decays in the dipole shower, improvements to the simulation of multiple-parton interactions, including diffractive processes; a new model for baryonic colour reconnection; improvements to strangeness production; as well as a new tune of the hadronisation parameters and support for generic Lorentz structures in BSM models. This article illustrates new features of versions 7.1 and 7.2.