| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1850006 | Nuclear Physics B - Proceedings Supplements | 2006 | 5 Pages |
Abstract
A current development-status of an automatic calculation system for a Feynman amplitude, GRACE, is reported especially for NLO-QCD processes.For the tree-level calculation, the event generators for the QCD processes up to 7 final-state particles have been developed. For electro-weak processes, electron-positron scattering at an one-loop correction up to 4-body final state are already obtained using a GRACE system.New developments of the GRACE system for the NLO-QCD processes are under construction. With the dimensional regularization, simple formulas of a loop integral for zero-, one- and two-off-shell external particle is obtained so far.
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