publication . Article . Conference object . Other literature type . 2010

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

M. Sioli; N. Mauri;
Open Access English
  • Published: 01 Jan 2010
  • Country: Italy
Abstract
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 charg...
Subjects
arXiv: High Energy Physics::ExperimentPhysics::Instrumentation and DetectorsAstrophysics::High Energy Astrophysical PhenomenaAstrophysics::Instrumentation and Methods for AstrophysicsNuclear Experiment
free text keywords: ATMOSPHERIC MUON FLUX, MUON SPECTROMETER, NEUTRINO DETECTORS, HADRONIC INTERACTIONS, Nuclear and High Energy Physics, Atomic and Molecular Physics, and Optics, Astrophysics and Astronomy, Cosmic ray, Opera, Energy spectrum, Atmosphere, Pion, Particle physics, Muon, Physics, Surface energy, Detector, Nuclear physics
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