Measurement of the cosmic ray muon charge ratio with the OPERA detector

The OPERA detector at the Gran Sasso underground laboratory (LNGS) was used to measure the cosmic ray muon charge ratio Rμ = Nμ+/Nμ− in the TeV energy region. We analyzed 403069 cosmic ray muons corresponding to 113.4 days of livetime during the 2008 CNGS run. We computed separately the muon charge...

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Detalles Bibliográficos
Autores principales: Mauri, N, Siol, M
Lenguaje:eng
Publicado: CERN 2010
Materias:
Astrophysics and Astronomy
Acceso en línea:https://dx.doi.org/10.5170/CERN-2010-003.259
http://cds.cern.ch/record/1977379
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author Mauri, N
Siol, M
author_facet Mauri, N
Siol, M
author_sort Mauri, N
collection CERN
description The OPERA detector at the Gran Sasso underground laboratory (LNGS) was used to measure the cosmic ray muon charge ratio Rμ = Nμ+/Nμ− in the TeV energy region. We analyzed 403069 cosmic ray muons corresponding to 113.4 days of livetime during the 2008 CNGS run. We computed separately the muon charge ratio for single and for multiple muon events in order to select different energy regions of the primary cosmic ray spectrum and to test the Rμ dependence on the primary composition. Rμ is also shown as a function of the Òvertical surface energyÓ Eμ cos !. A Þt to a simpliÞed model of muon pro- duction in atmosphere allowed the determination of the pion and kaon charge ratios weighted by the cosmic ray energy spectrum.
id cern-1977379
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2010
publisher CERN
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spelling cern-19773792022-08-10T20:06:50Zdoi:10.5170/CERN-2010-003.259http://cds.cern.ch/record/1977379engMauri, NSiol, MMeasurement of the cosmic ray muon charge ratio with the OPERA detectorAstrophysics and AstronomyThe OPERA detector at the Gran Sasso underground laboratory (LNGS) was used to measure the cosmic ray muon charge ratio Rμ = Nμ+/Nμ− in the TeV energy region. We analyzed 403069 cosmic ray muons corresponding to 113.4 days of livetime during the 2008 CNGS run. We computed separately the muon charge ratio for single and for multiple muon events in order to select different energy regions of the primary cosmic ray spectrum and to test the Rμ dependence on the primary composition. Rμ is also shown as a function of the Òvertical surface energyÓ Eμ cos !. A Þt to a simpliÞed model of muon pro- duction in atmosphere allowed the determination of the pion and kaon charge ratios weighted by the cosmic ray energy spectrum.CERNoai:cds.cern.ch:19773792010
spellingShingle Astrophysics and Astronomy
Mauri, N
Siol, M
Measurement of the cosmic ray muon charge ratio with the OPERA detector
title Measurement of the cosmic ray muon charge ratio with the OPERA detector
title_full Measurement of the cosmic ray muon charge ratio with the OPERA detector
title_fullStr Measurement of the cosmic ray muon charge ratio with the OPERA detector
title_full_unstemmed Measurement of the cosmic ray muon charge ratio with the OPERA detector
title_short Measurement of the cosmic ray muon charge ratio with the OPERA detector
title_sort measurement of the cosmic ray muon charge ratio with the opera detector
topic Astrophysics and Astronomy
url https://dx.doi.org/10.5170/CERN-2010-003.259
http://cds.cern.ch/record/1977379
work_keys_str_mv AT maurin measurementofthecosmicraymuonchargeratiowiththeoperadetector
AT siolm measurementofthecosmicraymuonchargeratiowiththeoperadetector

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