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 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 The American Physical Society.

Study of the ultrahigh-energy primary-cosmic-ray composition with the MACRO experiment

Giacomelli G.;Margiotta-Neri A.;Patrizii L.;Predieri F.;Spurio M.;
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 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 The American Physical Society.
Ahlen S.; Ambrosio M.; Antolini R.; Auriemma G.; Baldini A.; Bam B.B.; Barbarino G.C.; Barish B.C.; Battistom G.; Bellotti R.; Bemporad C.; Bernardini P.; Bilokon H.; Bisi V.; Bloise C.; Bussino S.; Cafagna F.; Calicchio M.; Campana P.; Campana D.; Carboni M.; Cecchini S.; Cei F.; Chiarella V.; Chiera C.; Cobis A.; Cormack R.; Corona A.; Coutu S.; DeCataldo G.; DeMarzo C.; De Vincenzi M.; Di Credico A.; Diehl E.; Erriquez O.; Favuzzi C.; Ficenec D.; Forti C.; Foti L.; Fusco P.; Giacomelli G.; Giannini G.; Giglietto N.; Giubellino P.; Grassi M.; Green P.; Grillo A.; Guarino F.; Gustavino C.; Habig A.; Heinz R.; Hong J.T.; Iarocci E.; Katsavounidis E.; Kearns E.; Klein S.; Kyriazopoulou S.; Lamanna E.; Lane C.; Lee C.; Levin D.; Lipari P.; Liu G.; Liu R.; Longo M.J.; Ludlam G.; Mancarella G.; Mandrioli G.; Margiotta-Neri A.; Marin A.; Marini A.; Martello D.; Martellotti G.; Chiesa A.M.; Masera M.; Matteuzzi P.; Michael D.G.; Miller L.; Monacelli P.; Monteno M.; Mufson S.; Musser J.; Nutter S.; Okada C.; Osteria G.; Palamara O.; Parlati S.; Patera V.; Patrizii L.; Pazzi R.; Peck C.W.; Petrakis J.; Petrera S.; Pignatano N.D.; Pistilli P.; Predieri F.; Ramello L.; Reynoldson J.; Ronga F.; Rosa G.; Satriano C.; Satta L.; Scapparone E.; Scholberg K.; Sciubba A.; Lugaresi P.S.; Severi M.; Sitta M.; Spinelli P.; Spinetti M.; Spurio M.; Steele J.; Steinberg R.; Stone J.L.; Sulak L.R.; Surdo A.; Tarle G.; Togo V.; Valente V.; Verdone G.R.; Walter C.W.; Webb R.; Worstell W.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11585/877041
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