Several activities are collected together as the CEDAR project, with the general theme of providing tools to interlink the other projects, for validation and tuning of the generators, and linking with the users of MC generators. While led from UCL and Glasgow, the project also has key people in CERN, Durham, and Fermilab.
The CEDAR teams are responsible for the Rivet (Robust Independent Validation of Experiment & Theory) package, which provides generator-independent analysis tools that enable MC model comparisons to the measurements in the HEPDATA database. HEPDATA functions as the central archive of measurements from previous and current colliders, including the LHC, and is used by all generator projects for tuning and validation of models. A major goal is to facilitate implementation of key LHC data analyses in Rivet as soon as they become available, and to provide all the functionality needed for analysis logic preservation.
The output from Rivet can be coupled with a mechanism for generator tuning. The Professor package provides an automated tool to do this, and is central to the MC tunes constructed and used by the LHC experiments. Rivet is also the central component of the CONTUR project, which uses measurement analyses from collider experiments to place statistical limits on the viability of New Physics models, complementing and often pre-empting dedicated search analyses.
CEDAR also developed and supports community tools, e.g. the software development platform HepForge; the LHAPDF library of parton densities; the HepMC event record standard and code library; the Les Houches accords for data exchange between generators; and the LHC Computing Grid "Generator Services" project. CEDAR includes members of the LHC and other experiments, to provide support, liaison and training.
For potential short-term studentships on the CEDAR project please see the UCL and Glasgow project pages.
Direct link to the sub-project home pages: