Measurement of the charge ratio of atmospheric muons with the CMS detector

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A measurement is presented of the flux ratio of positive and negative muons from cosmic ray interactions in the atmosphere, using data collected by the CMS detector at ground level and in the underground experimental cavern. The excellent performance of the CMS detector allowed detection of muons in...

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Autor principal: Sonnenschein, Lars
Lenguaje:eng
Publicado: 2010
Materias:
Detectors and Experimental Techniques
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.22323/1.120.0458
http://cds.cern.ch/record/1290987
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author Sonnenschein, Lars
author_facet Sonnenschein, Lars
author_sort Sonnenschein, Lars
collection CERN
description A measurement is presented of the flux ratio of positive and negative muons from cosmic ray interactions in the atmosphere, using data collected by the CMS detector at ground level and in the underground experimental cavern. The excellent performance of the CMS detector allowed detection of muons in the momentum range from 3 GeV/c to 1 TeV/c. For muon momenta below 100 GeV/c the flux ratio is measured to be a constant 1.2766 +/- 0.0032 (stat) +/- 0.0032 (syst), the most precise measurement to date. At higher momenta an increase in the charge asymmetry is observed, in agreement with models of muon production in cosmic ray showers and compatible with previous measurements by deep underground experiments.
id cern-1290987
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2010
record_format invenio
spelling cern-12909872019-09-30T06:29:59Zdoi:10.22323/1.120.0458http://cds.cern.ch/record/1290987engSonnenschein, LarsMeasurement of the charge ratio of atmospheric muons with the CMS detectorDetectors and Experimental TechniquesParticle Physics - ExperimentA measurement is presented of the flux ratio of positive and negative muons from cosmic ray interactions in the atmosphere, using data collected by the CMS detector at ground level and in the underground experimental cavern. The excellent performance of the CMS detector allowed detection of muons in the momentum range from 3 GeV/c to 1 TeV/c. For muon momenta below 100 GeV/c the flux ratio is measured to be a constant 1.2766 +/- 0.0032 (stat) +/- 0.0032 (syst), the most precise measurement to date. At higher momenta an increase in the charge asymmetry is observed, in agreement with models of muon production in cosmic ray showers and compatible with previous measurements by deep underground experiments.A measurement is presented of the flux ratio of positive and negative muons from cosmic ray interactions in the atmosphere, using data collected by the CMS detector at ground level and in the underground experimental cavern. The excellent performance of the CMS detector allowed detection of muons in the momentum range from 5GeV/c to 1TeV/c. For muon momenta below 100GeV/c the flux ratio is measured to be a constant 1.2766 +/-0.0032(stat.) +/-0.0032(syst.), the most precise measurement to date. At higher momenta an increase in the charge ratio is observed, in agreement with models of muon production in cosmic ray showers and compatible with previous measurements by deep underground experiments.arXiv:1009.0173CMS-CR-2010-151oai:cds.cern.ch:12909872010-08-31
spellingShingle Detectors and Experimental Techniques
Particle Physics - Experiment
Sonnenschein, Lars
Measurement of the charge ratio of atmospheric muons with the CMS detector
title Measurement of the charge ratio of atmospheric muons with the CMS detector
title_full Measurement of the charge ratio of atmospheric muons with the CMS detector
title_fullStr Measurement of the charge ratio of atmospheric muons with the CMS detector
title_full_unstemmed Measurement of the charge ratio of atmospheric muons with the CMS detector
title_short Measurement of the charge ratio of atmospheric muons with the CMS detector
title_sort measurement of the charge ratio of atmospheric muons with the cms detector
topic Detectors and Experimental Techniques
Particle Physics - Experiment
url https://dx.doi.org/10.22323/1.120.0458
http://cds.cern.ch/record/1290987
work_keys_str_mv AT sonnenscheinlars measurementofthechargeratioofatmosphericmuonswiththecmsdetector

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