Influence of 5-jet events on the measurement of the mass of the W boson in e+ e- collisions

A measurement of the mass of the W boson in hadronic e+e -> W+W- decays was performed with 183 pb-1 of data recorded with the OPAL detector at a centre-of-mass energy of s = 189 GeV. Using a one-dimensional reweighting technique where the W width is fixed to its Standard Model prediction, the mas...

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Detalles Bibliográficos
Autor principal: Christiansen, Tim
Lenguaje:eng
Publicado: 2000
Materias:
Particle Physics - Experiment
Acceso en línea:http://cds.cern.ch/record/2285512
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author Christiansen, Tim
author_facet Christiansen, Tim
author_sort Christiansen, Tim
collection CERN
description A measurement of the mass of the W boson in hadronic e+e -> W+W- decays was performed with 183 pb-1 of data recorded with the OPAL detector at a centre-of-mass energy of s = 189 GeV. Using a one-dimensional reweighting technique where the W width is fixed to its Standard Model prediction, the mass was determined to M4q W = 80.360+-0.105stat. +- 0.093syst.GeV Furthermore, the influence of a reconstruction of W+W- > qq¯qq¯ (g) events as five jets on both the statistical and the systematic uncertainty was studied and optimised. It was also shown the feasibility of a two-dimensional analysis, a simultaneous fit to the two W masses of each event.
id oai-inspirehep.net-551361
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2000
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spelling oai-inspirehep.net-5513612019-09-30T06:29:59Zhttp://cds.cern.ch/record/2285512engChristiansen, TimInfluence of 5-jet events on the measurement of the mass of the W boson in e+ e- collisionsParticle Physics - ExperimentA measurement of the mass of the W boson in hadronic e+e -> W+W- decays was performed with 183 pb-1 of data recorded with the OPAL detector at a centre-of-mass energy of s = 189 GeV. Using a one-dimensional reweighting technique where the W width is fixed to its Standard Model prediction, the mass was determined to M4q W = 80.360+-0.105stat. +- 0.093syst.GeV Furthermore, the influence of a reconstruction of W+W- > qq¯qq¯ (g) events as five jets on both the statistical and the systematic uncertainty was studied and optimised. It was also shown the feasibility of a two-dimensional analysis, a simultaneous fit to the two W masses of each event.CERN-THESIS-2000-059oai:inspirehep.net:5513612000
spellingShingle Particle Physics - Experiment
Christiansen, Tim
Influence of 5-jet events on the measurement of the mass of the W boson in e+ e- collisions
title Influence of 5-jet events on the measurement of the mass of the W boson in e+ e- collisions
title_full Influence of 5-jet events on the measurement of the mass of the W boson in e+ e- collisions
title_fullStr Influence of 5-jet events on the measurement of the mass of the W boson in e+ e- collisions
title_full_unstemmed Influence of 5-jet events on the measurement of the mass of the W boson in e+ e- collisions
title_short Influence of 5-jet events on the measurement of the mass of the W boson in e+ e- collisions
title_sort influence of 5-jet events on the measurement of the mass of the w boson in e+ e- collisions
topic Particle Physics - Experiment
url http://cds.cern.ch/record/2285512
work_keys_str_mv AT christiansentim influenceof5jeteventsonthemeasurementofthemassofthewbosonineecollisions

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