Release of FastJet 3.4.2 (latest stable release), 28 July 2023 (release notes).
This is a bug-fix release of FastJet, resolving a small compatibility issue with C++20, and updating SISCone to 3.0.6 (turns off -ffast-math compile-time option). See the full release notes for details. Download
Latest stable release of fjcore (v3.4.2), 28 July 2023.
Lightweight access to the core FastJet functionality (PseudoJet, JetDefinition, ClusterSequence and Selector).
It consists of just two files, fjcore.hh and, which can easily be included in 3rd party projects. Compile time: a few seconds. A fortran interface and basic examples are also included in the distribution. Download size: 75k.
Release of FastJet Contrib 1.054, 29 February 2024.
A package of contributed add-ons to FastJet. This release updates multiple packages (see NEWS for details), and adds a new SignalFreeBackgroundEstimator contrib. FastJet contrib 1.047 and later requires C++11 support in the compiler (if using GCC's g++ it should be version 5.1.0 or later). Direct download.