A new approach to multi-jet calculations in hadron collisions
Abstract
We present an algorithm to evaluate the exact, tree-level matrix elements for multi-parton processes in QCD. We tested this technique, based on the recursive evaluation of the S-matrix, on processes such as gg -> n gluons and q qbar -> n gluons, with n up to 9. The summation over colour configurations is designed to allow the construction of parton-level event generators suitable to interfacing with a parton-shower evolution including the effects of colour-coherence. This leads to a fully exclusive, hadron-level description of multi-jet final states, accurately incorporating the dynamics of large jet-jet separation angles. Explicit results for the total rates and differential distributions of processes with 8 final-state partons are given.
Keywords
Cite
@article{arxiv.hep-ph/9807570,
title = {A new approach to multi-jet calculations in hadron collisions},
author = {F. Caravaglios and M. L. Mangano and M. Moretti and R. Pittau},
journal= {arXiv preprint arXiv:hep-ph/9807570},
year = {2009}
}
Comments
17 pages, Latex, 5 figures