Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-12-27
Physics
High Energy Physics
High Energy Physics - Phenomenology
Talk presented at the 3rd Computational Particle Physics Workshop (CPP2010), September 23-25, 2010, KEK, Tsukuba, Japan; submi
Scientific paper
The history and the present status of the GR@PPA event generator are briefly reviewed. The development of GR@PPA started in 2000 in order to provide a framework of NLO event generators for hadron collision interactions. After the first release of the package (GR@PPA\_4b) in 2002, which supported four bottom quark production processes, many multi-particle production processes have been added to the package: GR@PPA\_ALL in 2004 and GR@PPA 2.7 in 2006. Now we are going to release a new package (GR@PPA 2.8), which supports single and double weak-boson production processes with an initial-state jet matching. Though the matrix elements presently included are still at the tree level, this new release is an important step towards constructing consistent NLO event generators.
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