Towards an effective-lagrangian approach to fermion-loop corrections

We present a study of the non-local lagrangian approach to incorporate higher-order effects in e+e- -> n fermions. In its minimal version, the non-local lagrangian approach is found to exhibit problems with unitarity and high-energy behaviour. We identify the origin of these problems and obtain s...

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Detalles Bibliográficos
Autores principales: Beenakker, W, Chapovsky, A P, Kanaki, A, Papadopoulos, C G, Pittau, R
Lenguaje:eng
Publicado: 2003
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/S0550-3213(03)00545-5
http://cds.cern.ch/record/608894
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author Beenakker, W
Chapovsky, A P
Kanaki, A
Papadopoulos, C G
Pittau, R
author_facet Beenakker, W
Chapovsky, A P
Kanaki, A
Papadopoulos, C G
Pittau, R
author_sort Beenakker, W
collection CERN
description We present a study of the non-local lagrangian approach to incorporate higher-order effects in e+e- -> n fermions. In its minimal version, the non-local lagrangian approach is found to exhibit problems with unitarity and high-energy behaviour. We identify the origin of these problems and obtain some first clues about possible solutions by investigating the zero-mode solutions of the Ward Identities. A numerical analysis of the importance of the zero-mode solutions is presented for four-fermion production processes.
id cern-608894
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2003
record_format invenio
spelling cern-6088942019-09-30T06:29:59Zdoi:10.1016/S0550-3213(03)00545-5http://cds.cern.ch/record/608894engBeenakker, WChapovsky, A PKanaki, APapadopoulos, C GPittau, RTowards an effective-lagrangian approach to fermion-loop correctionsParticle Physics - PhenomenologyWe present a study of the non-local lagrangian approach to incorporate higher-order effects in e+e- -> n fermions. In its minimal version, the non-local lagrangian approach is found to exhibit problems with unitarity and high-energy behaviour. We identify the origin of these problems and obtain some first clues about possible solutions by investigating the zero-mode solutions of the Ward Identities. A numerical analysis of the importance of the zero-mode solutions is presented for four-fermion production processes.hep-ph/0303105CERN-TH-2003-052oai:cds.cern.ch:6088942003-03-13
spellingShingle Particle Physics - Phenomenology
Beenakker, W
Chapovsky, A P
Kanaki, A
Papadopoulos, C G
Pittau, R
Towards an effective-lagrangian approach to fermion-loop corrections
title Towards an effective-lagrangian approach to fermion-loop corrections
title_full Towards an effective-lagrangian approach to fermion-loop corrections
title_fullStr Towards an effective-lagrangian approach to fermion-loop corrections
title_full_unstemmed Towards an effective-lagrangian approach to fermion-loop corrections
title_short Towards an effective-lagrangian approach to fermion-loop corrections
title_sort towards an effective-lagrangian approach to fermion-loop corrections
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/S0550-3213(03)00545-5
http://cds.cern.ch/record/608894
work_keys_str_mv AT beenakkerw towardsaneffectivelagrangianapproachtofermionloopcorrections
AT chapovskyap towardsaneffectivelagrangianapproachtofermionloopcorrections
AT kanakia towardsaneffectivelagrangianapproachtofermionloopcorrections
AT papadopouloscg towardsaneffectivelagrangianapproachtofermionloopcorrections
AT pittaur towardsaneffectivelagrangianapproachtofermionloopcorrections

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