GR@PPA 2.7 event generator for $pp$/$p\bar{p}$ collisions

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dc.creatorTsuno, S.
dc.creatorKaneko, T.
dc.creatorKurihara, Y.
dc.creatorOdaka, S.
dc.creatorKato, K.
dc.date2006-02-23
dc.date.accessioned2026-07-07T10:44:48Z
dc.date.available2026-07-07T10:44:48Z
dc.descriptionThe GR@PPA event generator has been updated to version 2.7. This distribution provides event generators for $V$ ($W$ or $Z$) + jets ($\leq$ 4 jets), $VV$ + jets ($\leq$ 2 jets) and QCD multi-jet ($\leq$ 4 jets) production processes at $pp$ and $p\bar{p}$ collisions, in addition to the four bottom quark productions implemented in our previous work (GR@PPA\_4b). Also included are the top-pair and top-pair + jet production processes, where the correlation between the decay products are fully reproduced at the tree level. Namely, processes up to seven-body productions can be simulated, based on ordinary Feynman diagram calculations at the tree level. In this version, the GR@PPA framework and the process dependent matrix-element routines are separately provided. This makes it easier to add further new processes, and allows users to make a choice of processes to implement. This version also has several new features to handle complicated multi-body production processes. A systematic way to combine many subprocesses to a single base-subprocess has been introduced, and a new method has been adopted to calculate the color factors of complicated QCD processes. They speed up the calculation significantly.
dc.description21 pages, no figure
dc.identifierhttps://arxiv.org/abs/hep-ph/0602213
dc.identifierhttp://arxiv.org/abs/hep-ph/0602213
dc.identifierComput.Phys.Commun.175:665-677,2006
dc.identifierdoi:10.1016/j.cpc.2006.07.011
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/182722
dc.subjectHigh Energy Physics - Phenomenology
dc.titleGR@PPA 2.7 event generator for $pp$/$p\bar{p}$ collisions
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