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Differential Luminosity Measurement using Bhabha Events
A good knowledge of the luminosity spectrum is mandatory for many measurements at future e+e- colliders. As the beam-parameters determining the luminosity spectrum cannot be measured precisely, the luminosity spectrum has to be measured through a gauge process with the detector. The measured distrib...
Autores principales: | , |
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Lenguaje: | eng |
Publicado: |
2013
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Materias: | |
Acceso en línea: | http://cds.cern.ch/record/1559256 |
_version_ | 1780930611481935872 |
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author | Poss, Stephane Sailer, Andre |
author_facet | Poss, Stephane Sailer, Andre |
author_sort | Poss, Stephane |
collection | CERN |
description | A good knowledge of the luminosity spectrum is mandatory for many measurements at future e+e- colliders. As the beam-parameters determining the luminosity spectrum cannot be measured precisely, the luminosity spectrum has to be measured through a gauge process with the detector. The measured distributions, used to reconstruct the spectrum, depend on Initial State Radiation, cross-section, and Final State Radiation. To extract the basic luminosity spectrum, a parametric model of the luminosity spectrum is created, in this case the spectrum at the 3 TeV CLIC. The model is used in a reweighting technique to extract the luminosity spectrum from measured Bhabha event observables, taking all relevant effects into account. The centre-of-mass energy spectrum is reconstructed within 5% over the full validity range of the model. The reconstructed spectrum does not result in a significant bias or systematic uncertainty in the exemplary physics benchmark process of smuon pair production. |
id | cern-1559256 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2013 |
record_format | invenio |
spelling | cern-15592562019-09-30T06:29:59Zhttp://cds.cern.ch/record/1559256engPoss, StephaneSailer, AndreDifferential Luminosity Measurement using Bhabha EventsParticle Physics - Experiment A good knowledge of the luminosity spectrum is mandatory for many measurements at future e+e- colliders. As the beam-parameters determining the luminosity spectrum cannot be measured precisely, the luminosity spectrum has to be measured through a gauge process with the detector. The measured distributions, used to reconstruct the spectrum, depend on Initial State Radiation, cross-section, and Final State Radiation. To extract the basic luminosity spectrum, a parametric model of the luminosity spectrum is created, in this case the spectrum at the 3 TeV CLIC. The model is used in a reweighting technique to extract the luminosity spectrum from measured Bhabha event observables, taking all relevant effects into account. The centre-of-mass energy spectrum is reconstructed within 5% over the full validity range of the model. The reconstructed spectrum does not result in a significant bias or systematic uncertainty in the exemplary physics benchmark process of smuon pair production.LCD-Note-2013-008oai:cds.cern.ch:15592562013 |
spellingShingle | Particle Physics - Experiment Poss, Stephane Sailer, Andre Differential Luminosity Measurement using Bhabha Events |
title | Differential Luminosity Measurement using Bhabha Events |
title_full | Differential Luminosity Measurement using Bhabha Events |
title_fullStr | Differential Luminosity Measurement using Bhabha Events |
title_full_unstemmed | Differential Luminosity Measurement using Bhabha Events |
title_short | Differential Luminosity Measurement using Bhabha Events |
title_sort | differential luminosity measurement using bhabha events |
topic | Particle Physics - Experiment |
url | http://cds.cern.ch/record/1559256 |
work_keys_str_mv | AT possstephane differentialluminositymeasurementusingbhabhaevents AT sailerandre differentialluminositymeasurementusingbhabhaevents |