Herwig++ 2.2 Release Note
M. Bahr, S. Gieseke, M. Gigg, D. Grellscheid, K. Hamilton, O., Latunde-Dada, S. Platzer, P. Richardson, M. H. Seymour, A. Sherstnev, B. R., Webber

TL;DR
Herwig++ 2.2 introduces new matrix elements, processes, and corrections for electroweak and Higgs boson production, enhancing the accuracy and capabilities of the Monte Carlo simulation for particle physics research.
Contribution
This release adds specific matrix elements and process simulations for electroweak boson and Higgs production, improving the modeling of these phenomena in Herwig++.
Findings
Enhanced simulation accuracy for electroweak gauge boson production
Inclusion of new Higgs production processes
Matrix element correction for QCD radiation in gluon fusion
Abstract
A new release of the Monte Carlo program Herwig++ (version 2.2) is now available. This version includes a number of improvements including: matrix elements for the production of an electroweak gauge boson, W and Z, in association with a jet; several new processes for Higgs production in association with an electroweak gauge boson; and the matrix element correction for QCD radiation in Higgs production via gluon fusion.
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