Release of FastJet 3.4.1 (latest stable release), 2 May 2023 (release notes).
This is a bug-fix release of FastJet. In particular, it fixes a major bug in thread-safety support (which could lead to wrong results and race conditions, when full thread safety was enabled in the configure step). FastJet-3.4.1 also adds new features for increased precision and enhanced usage in plugins. See the full release notes for details. Download
Latest stable release of fjcore (v3.4.1), 2 May 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 1.052, 18 May 2023.
A package of contributed add-ons to FastJet. This release updates ConstituentSubtractor to version 1.4.6 with various bug fixes. FastJet contrib 1.047 upwards now requires c++11 support in the compiler (if using g++ it should be version 5.1.0 or later). Direct download.