The FastJet package is a fast implementation of
the *k _{t}* and Aachen/Cambridge jet clustering
algorithms. Since v2.0, it also provides an interface to
external jet algorithms (

This is an area where we gather 3rd-party contributions to FastJet. Although individual contributions are maintained by their own authors, the "FastJet team" has developed the generic interface (similar to a package manager) and provide some level of Quality Assessment to guarantee a minimal standard and degree of coherence over the whole project.

__S__eedless __I__nfrared __S__afe __Cone__
algorithm developed with Gavin Salam. This is the fast,
infrared-and-collinear-safe cone algorithm ameant to cure the
unsafeties of the JetClu and Midpoint algorithms used at the
tevatron (and the ATLAS Cone initially introduced by the ATLAS
collaboration for use at the LHC).

QCD predictions for the inclusove jet cross-section at NLO
matched to an all-order resummation of the leading logarithms
of the jet radius *R* (at small *R*)

This is an interactive webpage that allows you to observe the effect of varying the jet definition on the reconstruction of heavy objects decaying to dijets at the LHC. It illustrates the importance of caref ully choosing the appropriate jet definition for a given process and at a given scale. For more details, see the corresponding paper.