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.

Study of the Ultrahigh-energy Primary-cosmic-ray Composition With the Macro Experiment / S., A., M., A., R., A., G., A., A., B., B. B., B., G. C., B., B. C., B., G., B., R., B., C., B., P., B., H., B., V., B., C., B., S., B., F., C., M., C., P., C., D., C., et al.. - In: PHYSICAL REVIEW D. - ISSN 0556-2821. - STAMPA. - 46:(1992), pp. 895-902. [10.1103/PhysRevD.46.895]

Study of the Ultrahigh-energy Primary-cosmic-ray Composition With the Macro Experiment

IAROCCI, Enzo;PATERA, Vincenzo;SATTA, Luigi;SCIUBBA, Adalberto;
1992

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
01 Pubblicazione su rivista::01a Articolo in rivista
Study of the Ultrahigh-energy Primary-cosmic-ray Composition With the Macro Experiment / S., A., M., A., R., A., G., A., A., B., B. B., B., G. C., B., B. C., B., G., B., R., B., C., B., P., B., H., B., V., B., C., B., S., B., F., C., M., C., P., C., D., C., et al.. - In: PHYSICAL REVIEW D. - ISSN 0556-2821. - STAMPA. - 46:(1992), pp. 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/11573/495178
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