Speaker
Dr
Andy Buckley
(Durham University)
Description
Monte Carlo event generators are an essential tool for modern particle physics; they
simulate aspects of collider events ranging from the parton-level "hard process" to
cascades of QCD radiation in both initial and final states, non-perturbative
hadronization processes, underlying event physics and specific particle decays. LHC
events in particular are so complex that event generator simulations are essential to
background modelling, trigger tuning and the analysis of candidate signal events itself.
However, event generators are not fully predictive: various phenomenological
parameters must be tuned to experimental data to bootstrap a general purpose
generator before physically meaningful predictions can be obtained. The CEDAR
collaboration has developed a system for systematic validation of event generators,
using archived data from the HepData archive for comparison with generator
predictions for a range of observables. The experimental analyses corresponding to
each HepData record are performed on simulated data using a generator interface and
analysis toolkit named Rivet. CEDAR provides a Web interface to the Rivet system,
JetWeb, which stores known generator parameter settings and their comparisons to
HepData's records in a relational database. As part of CEDAR, HepData has been
significantly restructured to allow JetWeb and other applications to automatically
retrieve and process the data archives.
CEDAR also provides a free collaborative development facility, HepForge, for HEP
projects which aim to provide useful, well-engineered tools to the community. All the
CEDAR projects are available through the portal Web site at www.cedar.ac.uk and the
HepForge site at www.hepforge.org.
| Submitted on behalf of Collaboration (ex, BaBar, ATLAS) | CEDAR |
|---|
Primary author
Dr
Andy Buckley
(Durham University)
