Calculation of fermionic two-loop contributions to muon decay

The computation of the correction \Delta r in the W-Z mass correlation, derived from muon decay, is described at the two-loop level in the Standard Model. Technical aspects which become relevant at this level are studied, e.g. gauge-parameter independent mass renormalization, ghost-sector renormaliz...

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Detalles Bibliográficos
Autores principales: Freitas, A., Heinemeyer, S., Hollik, W., Walter, W., Weiglein, G.
Lenguaje:eng
Publicado: 2000
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/S0920-5632(00)00827-6
http://cds.cern.ch/record/447174
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author Freitas, A.
Heinemeyer, S.
Hollik, W.
Walter, W.
Weiglein, G.
author_facet Freitas, A.
Heinemeyer, S.
Hollik, W.
Walter, W.
Weiglein, G.
author_sort Freitas, A.
collection CERN
description The computation of the correction \Delta r in the W-Z mass correlation, derived from muon decay, is described at the two-loop level in the Standard Model. Technical aspects which become relevant at this level are studied, e.g. gauge-parameter independent mass renormalization, ghost-sector renormalization and the treatment of \gamma_5. Exact results for \Delta r and the W mass prediction including O(\alpha^2) corrections with fermion loops are presented and compared with previous results of a next-to-leading order expansion in the top-quark mass.
id cern-447174
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2000
record_format invenio
spelling cern-4471742023-03-14T17:02:59Zdoi:10.1016/S0920-5632(00)00827-6http://cds.cern.ch/record/447174engFreitas, A.Heinemeyer, S.Hollik, W.Walter, W.Weiglein, G.Calculation of fermionic two-loop contributions to muon decayParticle Physics - PhenomenologyThe computation of the correction \Delta r in the W-Z mass correlation, derived from muon decay, is described at the two-loop level in the Standard Model. Technical aspects which become relevant at this level are studied, e.g. gauge-parameter independent mass renormalization, ghost-sector renormalization and the treatment of \gamma_5. Exact results for \Delta r and the W mass prediction including O(\alpha^2) corrections with fermion loops are presented and compared with previous results of a next-to-leading order expansion in the top-quark mass.The computation of the correction \Delta r in the W-Z mass correlation, derived from muon decay, is described at the two-loop level in the Standard Model. Technical aspects which become relevant at this level are studied, e.g. gauge-parameter independent mass renormalization, ghost-sector renormalization and the treatment of \gamma_5. Exact results for \Delta r and the W mass prediction including O(\alpha^2) corrections with fermion loops are presented and compared with previous results of a next-to-leading order expansion in the top-quark mass.hep-ph/0007129CERN-TH-2000-207DESY-00-101KA-TP-15-2000CERN-TH-2000-207DESY-2000-101KA-TP-2000-15DESY-00-101oai:cds.cern.ch:4471742000-07-13
spellingShingle Particle Physics - Phenomenology
Freitas, A.
Heinemeyer, S.
Hollik, W.
Walter, W.
Weiglein, G.
Calculation of fermionic two-loop contributions to muon decay
title Calculation of fermionic two-loop contributions to muon decay
title_full Calculation of fermionic two-loop contributions to muon decay
title_fullStr Calculation of fermionic two-loop contributions to muon decay
title_full_unstemmed Calculation of fermionic two-loop contributions to muon decay
title_short Calculation of fermionic two-loop contributions to muon decay
title_sort calculation of fermionic two-loop contributions to muon decay
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/S0920-5632(00)00827-6
http://cds.cern.ch/record/447174
work_keys_str_mv AT freitasa calculationoffermionictwoloopcontributionstomuondecay
AT heinemeyers calculationoffermionictwoloopcontributionstomuondecay
AT hollikw calculationoffermionictwoloopcontributionstomuondecay
AT walterw calculationoffermionictwoloopcontributionstomuondecay
AT weigleing calculationoffermionictwoloopcontributionstomuondecay

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