Minutes of the meeting held on February 27, 2002
During ALEPH week
- Christophe presented the new developments that have been done on ALPHA++. It includes the Gampeck class, a wrapped kinematic fit, vertexing, etc. A
manual is now available on the web and it was decided to publish it as an
ALEPH note as soon as contributions from Barbara Clerbaux and Kay Huettman
are included. It was also emphasised that the ROOT toolkit is being
officially supported by CERN and used at LHC.
- Barbara Clerbaux showed some results and plots produced with her wrapped ABCfit routine. They have been achieved in the context of the Higgs to WW
analysis and exhibit the full functionality and flexibility of the
package. A full comparison with ALPHA is planned.
- Kay Huettman presented the final state of his secondary vertexing
implementation. He tested it on an event by event basis and reported a
perfect equality between the two sets of results. This work is final in
the sense that Kay his leaving the ALEPH community. The present stage
still includes wrappers which will stay as such unless somebody else
realises a full C++ implementation of the algorithms.
- Vincent finally presented the current TODO list, with present assignment to volunteers. It was stressed that a full C++ implementation of the
FORTRAN-wrapped routines is not feasible with the current manpower. Main
objectives are the RQUANT neural network evaluation, b-tag tests, and a
better ROOT integration. It was also emphasised that ALPHA++ is now a
fully functional product available for "production-like" studies and
particularly suited to student willing to have a fast access to ALEPH
data.
Christophe Delaere