Separation of soft and collinear infrared limits of QCD squared matrix elements

We present a simple way of separating the overlap between the soft and collinear factorization formulae of QCD squared matrix elements. We check its validity explicitly for single and double unresolved emissions of tree-level processes. The new method makes possible the definition of helicity-depend...

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Detalles Bibliográficos
Autores principales: Nagy, Zoltan, Somogyi, Gabor, Trocsanyi, Zoltan
Lenguaje:eng
Publicado: 2007
Materias:
Particle Physics - Phenomenology
Acceso en línea:http://cds.cern.ch/record/1020987
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author Nagy, Zoltan
Somogyi, Gabor
Trocsanyi, Zoltan
author_facet Nagy, Zoltan
Somogyi, Gabor
Trocsanyi, Zoltan
author_sort Nagy, Zoltan
collection CERN
description We present a simple way of separating the overlap between the soft and collinear factorization formulae of QCD squared matrix elements. We check its validity explicitly for single and double unresolved emissions of tree-level processes. The new method makes possible the definition of helicity-dependent subtraction terms for regularizing the real contributions in computing radiative corrections to QCD jet cross sections. This implies application of Monte Carlo helicity summation in computing higher order corrections.
id cern-1020987
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2007
record_format invenio
spelling cern-10209872023-03-14T18:12:30Zhttp://cds.cern.ch/record/1020987engNagy, ZoltanSomogyi, GaborTrocsanyi, ZoltanSeparation of soft and collinear infrared limits of QCD squared matrix elementsParticle Physics - PhenomenologyWe present a simple way of separating the overlap between the soft and collinear factorization formulae of QCD squared matrix elements. We check its validity explicitly for single and double unresolved emissions of tree-level processes. The new method makes possible the definition of helicity-dependent subtraction terms for regularizing the real contributions in computing radiative corrections to QCD jet cross sections. This implies application of Monte Carlo helicity summation in computing higher order corrections.We present a simple way of separating the overlap between the soft and collinear factorization formulae of QCD squared matrix elements. We check its validity explicitly for single and double unresolved emissions of tree-level processes. The new method makes possible the definition of helicity-dependent subtraction terms for regularizing the real contributions in computing radiative corrections to QCD jet cross sections. This implies application of Monte Carlo helicity summation in computing higher order corrections.hep-ph/0702273CERN-PH-TH-2006-231ZU-TH-3-07CERN-PH-TH-2006-231ZU-TH-2007-03oai:cds.cern.ch:10209872007-02-27
spellingShingle Particle Physics - Phenomenology
Nagy, Zoltan
Somogyi, Gabor
Trocsanyi, Zoltan
Separation of soft and collinear infrared limits of QCD squared matrix elements
title Separation of soft and collinear infrared limits of QCD squared matrix elements
title_full Separation of soft and collinear infrared limits of QCD squared matrix elements
title_fullStr Separation of soft and collinear infrared limits of QCD squared matrix elements
title_full_unstemmed Separation of soft and collinear infrared limits of QCD squared matrix elements
title_short Separation of soft and collinear infrared limits of QCD squared matrix elements
title_sort separation of soft and collinear infrared limits of qcd squared matrix elements
topic Particle Physics - Phenomenology
url http://cds.cern.ch/record/1020987
work_keys_str_mv AT nagyzoltan separationofsoftandcollinearinfraredlimitsofqcdsquaredmatrixelements
AT somogyigabor separationofsoftandcollinearinfraredlimitsofqcdsquaredmatrixelements
AT trocsanyizoltan separationofsoftandcollinearinfraredlimitsofqcdsquaredmatrixelements

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