A new approach to multi-jet calculations in hadron collisions

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 config...

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Detalles Bibliográficos
Autores principales: Caravaglios, F., Mangano, Michelangelo L., Moretti, M., Pittau, R.
Lenguaje:eng
Publicado: 1998
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/S0550-3213(98)00739-1
http://cds.cern.ch/record/361485
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author Caravaglios, F.
Mangano, Michelangelo L.
Moretti, M.
Pittau, R.
author_facet Caravaglios, F.
Mangano, Michelangelo L.
Moretti, M.
Pittau, R.
author_sort Caravaglios, F.
collection CERN
description 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.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1998
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spelling cern-3614852023-03-24T04:11:14Zdoi:10.1016/S0550-3213(98)00739-1http://cds.cern.ch/record/361485engCaravaglios, F.Mangano, Michelangelo L.Moretti, M.Pittau, R.A new approach to multi-jet calculations in hadron collisionsParticle Physics - PhenomenologyWe 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.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.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.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 q → 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 eight final-state partons are given.hep-ph/9807570CERN-TH-98-249CERN-TH-98-249oai:cds.cern.ch:3614851998-08-03
spellingShingle Particle Physics - Phenomenology
Caravaglios, F.
Mangano, Michelangelo L.
Moretti, M.
Pittau, R.
A new approach to multi-jet calculations in hadron collisions
title A new approach to multi-jet calculations in hadron collisions
title_full A new approach to multi-jet calculations in hadron collisions
title_fullStr A new approach to multi-jet calculations in hadron collisions
title_full_unstemmed A new approach to multi-jet calculations in hadron collisions
title_short A new approach to multi-jet calculations in hadron collisions
title_sort new approach to multi-jet calculations in hadron collisions
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/S0550-3213(98)00739-1
http://cds.cern.ch/record/361485
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