We present a measurement of the ratio of positive to negative muon fluxes from cosmic ray interactions in the atmosphere, using data collected by the CMS detector both at ground level and in the underground experimental cavern at the CERN LHC. Muons were detected in the momentum range from 5 GeV/. c to 1 TeV/. c. The surface flux ratio is measured to be 1.2766±0.0032(stat.)±0.0032(syst.), independent of the muon momentum, below 100 GeV/. c. This is the most precise measurement to date. At higher momenta the data are consistent with an increase of the charge ratio, in agreement with cosmic ray shower models and compatible with previous measurements by deep-underground experiments. © 2010.

Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., et al. (2010). Measurement of the charge ratio of atmospheric muons with the CMS detector. PHYSICS LETTERS. SECTION B, 692(2), 83-104 [10.1016/j.physletb.2010.07.033].

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

De Guio, F;GHEZZI, ALESSIO;GOVONI, PIETRO;PAGANONI, MARCO;RAGAZZI, STEFANO;TABARELLI DE FATIS, TOMMASO;Dinardo, M;
2010

Abstract

We present a measurement of the ratio of positive to negative muon fluxes from cosmic ray interactions in the atmosphere, using data collected by the CMS detector both at ground level and in the underground experimental cavern at the CERN LHC. Muons were detected in the momentum range from 5 GeV/. c to 1 TeV/. c. The surface flux ratio is measured to be 1.2766±0.0032(stat.)±0.0032(syst.), independent of the muon momentum, below 100 GeV/. c. This is the most precise measurement to date. At higher momenta the data are consistent with an increase of the charge ratio, in agreement with cosmic ray shower models and compatible with previous measurements by deep-underground experiments. © 2010.
Articolo in rivista - Articolo scientifico
LHC, CMS
English
2010
692
2
83
104
none
Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., et al. (2010). Measurement of the charge ratio of atmospheric muons with the CMS detector. PHYSICS LETTERS. SECTION B, 692(2), 83-104 [10.1016/j.physletb.2010.07.033].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/22822
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