Herwig++ 2.1 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++ 2.1 introduces significant improvements such as multiple parton scattering, BSM physics inclusion, and a new decay model, enhancing its capability for simulating hadron-hadron collision events.
Contribution
This release adds a comprehensive multiple scattering model, BSM physics support, and a tuned decay model, advancing Herwig++'s simulation accuracy and scope.
Findings
Enhanced simulation of underlying events with multiple scattering
Inclusion of Beyond the Standard Model physics
Improved hadronic decay modeling
Abstract
A new release of the Monte Carlo program Herwig++ (version 2.1) is now available. This version includes a number of significant improvements including: an eikonal multiple parton-parton scattering model of the underlying event; the inclusion of Beyond the Standard Model physics; and a new hadronic decay model tuned to LEP data. This version of the program is now fully ready for the simulation of events in hadron-hadron collisions.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · High-Energy Particle Collisions Research · Quantum Chromodynamics and Particle Interactions
