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Title

Study of multi-muon bundles in cosmic ray showers detected with the DELPHI detector at LEP

AuthorsAbdallah, J.; García García, Carmen CSIC ORCID; Matorras, Francisco CSIC ORCID ; Piedra, Jonatan CSIC ORCID ; López, Juan M. CSIC ORCID ; Costa, María José CSIC ORCID; Cuevas, Javier CSIC ORCID; Rodríguez, David; Marco, Jesús CSIC ORCID ; Marco, Rafael CSIC; Fernández Menéndez, Javier CSIC ORCID; Oyanguren, Arantza CSIC ORCID; Ferrer, Antonio CSIC ORCID; Perepelitsa, Vassil; Salt, José CSIC ORCID; Fuster, Juan CSIC ORCID; Martínez-Rivero, Celso CSIC ORCID ; Tortosa, Pablo CSIC
KeywordsTotal cross-section
Extensive air-showers
Frejus Detector
Cosmic rays
Cosmic ray interactions
Cosmic ray muons
Issue Date8-Jun-2007
PublisherElsevier
CitationAstroparticle Physics 28(3): 273-286 (2007)
AbstractThe DELPHI detector at LEP has been used to measure multi-muon bundles originating from cosmic ray interactions with air. The cosmic events were recorded in "parasitic mode" between individual e(+)e(-) interactions and the total live time of this data taking is equivalent to 1.6 x 10(6) s. The DELPHI apparatus is located about 100 m underground and the 84 metres rock overburden imposes a cutoff of about 52 GeV/c on muon momenta. The data from the large volume Hadron Calorimeter allowed the muon multiplicity of 54,201 events to be reconstructed. The resulting muon multiplicity distribution is compared with the prediction of the Monte Carlo simulation based on CORSIKA/QGSJETOI. The model fails to describe the abundance of high multiplicity events. The impact of QGSJET internal parameters on the results is also studied.
Description14 páginas, 17 figuras.-- PACS nrs.: 98.70.Sa, 13.85.Tp, 96.40.De.-- El Pdf del artículo es la versión ptre-print: arXiv:0706.2561.-- DELPHI Collaboration: et al.
Publisher version (URL)http://dx.doi.org/10.1016/j.astropartphys.2007.06.001
URIhttp://hdl.handle.net/10261/8518
DOI10.1016/j.astropartphys.2007.06.001
ISSN0927-6505
Appears in Collections:(IFIC) Artículos
(IFCA) Artículos

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