Complete fermionic two-loop results for the $M_{W}-M_{Z}$ interdependence

The complete fermionic two-loop contributions to the prediction for the W-boson mass from muon decay in the electroweak Standard Model are evaluated exactly, i.e. no expansion in the top-quark and the Higgs-boson mass is made. The result for the W-boson mass is compared with the previous result of a...

Descripción completa

Detalles Bibliográficos
Autores principales: Freitas, A., Hollik, W., Walter, W., Weiglein, G.
Lenguaje:eng
Publicado: 2000
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(00)01263-6
https://dx.doi.org/10.1016/j.physletb.2003.08.006
http://cds.cern.ch/record/446919
_version_ 1780895994538360832
author Freitas, A.
Hollik, W.
Walter, W.
Weiglein, G.
author_facet Freitas, A.
Hollik, W.
Walter, W.
Weiglein, G.
author_sort Freitas, A.
collection CERN
description The complete fermionic two-loop contributions to the prediction for the W-boson mass from muon decay in the electroweak Standard Model are evaluated exactly, i.e. no expansion in the top-quark and the Higgs-boson mass is made. The result for the W-boson mass is compared with the previous result of an expansion up to next-to-leading order in the top-quark mass. The predictions are found to agree with each other within about 4 MeV. A simple parameterization of the new result is presented, approximating the full result better than 0.4 MeV for M_H < 1 TeV.
id cern-446919
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2000
record_format invenio
spelling cern-4469192023-03-14T17:03:10Zdoi:10.1016/S0370-2693(00)01263-6doi:10.1016/j.physletb.2003.08.006http://cds.cern.ch/record/446919engFreitas, A.Hollik, W.Walter, W.Weiglein, G.Complete fermionic two-loop results for the $M_{W}-M_{Z}$ interdependenceParticle Physics - PhenomenologyThe complete fermionic two-loop contributions to the prediction for the W-boson mass from muon decay in the electroweak Standard Model are evaluated exactly, i.e. no expansion in the top-quark and the Higgs-boson mass is made. The result for the W-boson mass is compared with the previous result of an expansion up to next-to-leading order in the top-quark mass. The predictions are found to agree with each other within about 4 MeV. A simple parameterization of the new result is presented, approximating the full result better than 0.4 MeV for M_H < 1 TeV.The complete fermionic two-loop contributions to the prediction for the W-boson mass from muon decay in the electroweak Standard Model are evaluated exactly, i.e. no expansion in the top-quark and the Higgs-boson mass is made. The result for the W-boson mass is compared with the previous result of an expansion up to next-to-leading order in the top-quark mass. The predictions are found to agree with each other within about 5 MeV. A simple parameterization of the new result is presented, approximating the full result better than 0.4 MeV for M_H < 1 TeV.The complete fermionic two-loop contributions to the prediction for the W-boson mass from muon decay in the electroweak Standard Model are evaluated exactly, i.e., no expansion in the top-quark and the Higgs-boson mass is made. The result for the W-boson mass is compared with the previous result of an expansion up to next-to-leading order in the top-quark mass. The predictions are found to agree with each other within about 4 MeV. A simple parametrization of the new result is presented, approximating the full result to better than 0.4 MeV for M H ⩽1 TeV.hep-ph/0007091CERN-TH-2000-194DESY-00-097KA-TP-13-2000CERN-TH-2000-194DESY-2000-097KA-TP-2000-13DESY-00-097oai:cds.cern.ch:4469192000-07-10
spellingShingle Particle Physics - Phenomenology
Freitas, A.
Hollik, W.
Walter, W.
Weiglein, G.
Complete fermionic two-loop results for the $M_{W}-M_{Z}$ interdependence
title Complete fermionic two-loop results for the $M_{W}-M_{Z}$ interdependence
title_full Complete fermionic two-loop results for the $M_{W}-M_{Z}$ interdependence
title_fullStr Complete fermionic two-loop results for the $M_{W}-M_{Z}$ interdependence
title_full_unstemmed Complete fermionic two-loop results for the $M_{W}-M_{Z}$ interdependence
title_short Complete fermionic two-loop results for the $M_{W}-M_{Z}$ interdependence
title_sort complete fermionic two-loop results for the $m_{w}-m_{z}$ interdependence
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/S0370-2693(00)01263-6
https://dx.doi.org/10.1016/j.physletb.2003.08.006
http://cds.cern.ch/record/446919
work_keys_str_mv AT freitasa completefermionictwoloopresultsforthemwmzinterdependence
AT hollikw completefermionictwoloopresultsforthemwmzinterdependence
AT walterw completefermionictwoloopresultsforthemwmzinterdependence
AT weigleing completefermionictwoloopresultsforthemwmzinterdependence

Ejemplares similares