Approximations for W-Pair Production at Linear-Collider Energies

We determine the accuracy of various approximations to the O(alpha) corrections for on-shell W-pair production. While an approximation based on the universal corrections arising from initial-state radiation, from the running of alpha, and from corrections proportional to m_t^2 fails in the Linear-Co...

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Detalles Bibliográficos
Autores principales: Denner, Ansgar, Dittmaier, S.
Lenguaje:eng
Publicado: 1997
Materias:
Particle Physics - Phenomenology
Acceso en línea:http://cds.cern.ch/record/328111
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author Denner, Ansgar
Dittmaier, S.
author_facet Denner, Ansgar
Dittmaier, S.
author_sort Denner, Ansgar
collection CERN
description We determine the accuracy of various approximations to the O(alpha) corrections for on-shell W-pair production. While an approximation based on the universal corrections arising from initial-state radiation, from the running of alpha, and from corrections proportional to m_t^2 fails in the Linear-Collider energy range, a high-energy approximation improved by the exact universal corrections is sufficiently good above about 500GeV. These results indicate that in Monte Carlo event generators for off-shell W-pair production the incorporation of the universal corrections is not sufficient and more corrections should be included.
id cern-328111
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1997
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spelling cern-3281112023-03-14T20:33:21Zhttp://cds.cern.ch/record/328111engDenner, AnsgarDittmaier, S.Approximations for W-Pair Production at Linear-Collider EnergiesParticle Physics - PhenomenologyWe determine the accuracy of various approximations to the O(alpha) corrections for on-shell W-pair production. While an approximation based on the universal corrections arising from initial-state radiation, from the running of alpha, and from corrections proportional to m_t^2 fails in the Linear-Collider energy range, a high-energy approximation improved by the exact universal corrections is sufficiently good above about 500GeV. These results indicate that in Monte Carlo event generators for off-shell W-pair production the incorporation of the universal corrections is not sufficient and more corrections should be included.We determine the accuracy of various approximations to the O(alpha) corrections for on-shell W-pair production. While an approximation based on the universal corrections arising from initial-state radiation, from the running of alpha, and from corrections proportional to m_t^2 fails in the Linear-Collider energy range, a high-energy approximation improved by the exact universal corrections is sufficiently good above about 500GeV. These results indicate that in Monte Carlo event generators for off-shell W-pair production the incorporation of the universal corrections is not sufficient and more corrections should be included.hep-ph/9706388CERN-TH-97-128CERN-TH-97-128oai:cds.cern.ch:3281111997-06-18
spellingShingle Particle Physics - Phenomenology
Denner, Ansgar
Dittmaier, S.
Approximations for W-Pair Production at Linear-Collider Energies
title Approximations for W-Pair Production at Linear-Collider Energies
title_full Approximations for W-Pair Production at Linear-Collider Energies
title_fullStr Approximations for W-Pair Production at Linear-Collider Energies
title_full_unstemmed Approximations for W-Pair Production at Linear-Collider Energies
title_short Approximations for W-Pair Production at Linear-Collider Energies
title_sort approximations for w-pair production at linear-collider energies
topic Particle Physics - Phenomenology
url http://cds.cern.ch/record/328111
work_keys_str_mv AT denneransgar approximationsforwpairproductionatlinearcolliderenergies
AT dittmaiers approximationsforwpairproductionatlinearcolliderenergies

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