We present the analysis of multiple-muon events collected with one supermodule (1013 h live time) and two supermodules (1195 h live time) of the MACRO detector at Gran Sasso, Italy. Multimuon rates are shown to be sensitive to primary-cosmic-ray energies between approximately 50 TeV and several thousand TeV. Experimental data are compared with the expected rates from two composition models: a light (i.e., proton-rich) and a heavy (i.e., Fe-rich) composition. The predictions are based on a Monte Carlo simulation of the hadronic interactions of cosmic-ray nuclei, followed by a detailed tracking of the muons through the rock and the experimental apparatus. The results show good sensitivity of the MACRO detector to primary composition. The data exhibit a preference towards the light composition model.

Ahlen, S., Ambrosio, M., Antolini, R., Auriemma, G., Baldini, A., Bam, B.b., et al. (1992). STUDY OF THE ULTRAHIGH-ENERGY PRIMARY-COSMIC-RAY COMPOSITION WITH THE MACRO EXPERIMENT. PHYSICAL REVIEW D, 46(3), 895-902 [10.1103/PhysRevD.46.895].

STUDY OF THE ULTRAHIGH-ENERGY PRIMARY-COSMIC-RAY COMPOSITION WITH THE MACRO EXPERIMENT

BUSSINO, Severino Angelo Maria;
1992-01-01

Abstract

We present the analysis of multiple-muon events collected with one supermodule (1013 h live time) and two supermodules (1195 h live time) of the MACRO detector at Gran Sasso, Italy. Multimuon rates are shown to be sensitive to primary-cosmic-ray energies between approximately 50 TeV and several thousand TeV. Experimental data are compared with the expected rates from two composition models: a light (i.e., proton-rich) and a heavy (i.e., Fe-rich) composition. The predictions are based on a Monte Carlo simulation of the hadronic interactions of cosmic-ray nuclei, followed by a detailed tracking of the muons through the rock and the experimental apparatus. The results show good sensitivity of the MACRO detector to primary composition. The data exhibit a preference towards the light composition model.
1992
Ahlen, S., Ambrosio, M., Antolini, R., Auriemma, G., Baldini, A., Bam, B.b., et al. (1992). STUDY OF THE ULTRAHIGH-ENERGY PRIMARY-COSMIC-RAY COMPOSITION WITH THE MACRO EXPERIMENT. PHYSICAL REVIEW D, 46(3), 895-902 [10.1103/PhysRevD.46.895].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/120007
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