Muon “depth-intensity” relation measured by the LVD underground experiment and cosmic-ray muon spectrum at sea level

M. Aglietta, B. Alpat, E. D. Alyea, P. Antonioli, G. Badino, G. Bari, M. Basile, V. S. Berezinsky, F. Bersani, M. Bertaina, R. Bertoni, G. Bonoli, A. Bosco, G. Bruni, G. Cara Romeo, C. Castagnoli, A. Castellina, A. Chiavassa, J. A. Chinellato, L. CifarelliF. Cindolo, G. Conforto, A. Contin, V. L. Dadykin, A. De Silva, M. Deutsch, P. Dominici, L. G. Dos Santos, L. Emaldi, R. I. Enikeev, F. L. Fabbri, W. Fulgione, P. Galeotti, C. Ghetti, P. Ghia, P. Giusti, R. Granella, F. Grianti, G. Guidi, E. S. Hafen, P. Haridas, G. Iacobucci, N. Inoue, E. Kemp, F. F. Khalchukov, E. V. Korolkova, P. V. Korchaguin, V. B. Korchaguin, V. A. Kudryavtsev, K. Lau, M. Luvisetto, G. Maccarone, A. S. Malguin, R. Mantovani, T. Massam, B. Mayes, A. Megna, C. Melagrana, N. Mengotti Silva, C. Morello, J. Moromisato, R. Nania, G. Navarra, L. Panaro, L. Periale, A. Pesci, P. Picchi, L. Pinsky, I. A. Pless, J. Pyrlik, V. G. Ryasny, O. G. Ryazhskaya, O. Saavedra, K. Saitoh, S. Santini, G. Sartorelli, M. Selvi, N. Taborgna, V. P. Talochkin, J. Tang, G. C. Trinchero, S. Tsuji, A. Turtelli, I. Uman, P. Vallania, G. Van Buren, S. Vernetto, F. Vetrano, C. Vigorito, E. von Goeler, L. Votano, T. Wada, R. Weinstein, M. Widgoff, V. F. Yakushev, I. Yamamoto, G. T. Zatsepin, A. Zichichi

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Abstract

We present an analysis of muon events with all muon multiplicities collected during 21804 h of operation of the first Large Volume Detector tower. The measured angular distribution of muon intensity has been converted to the “depth–vertical-intensity” relation in the depth range from 3 to 12 km w.e. The analysis of this relation allowed us to derive the power index [Formula Presented] of the primary all-nucleon spectrum: [Formula Presented] The “depth–vertical-intensity” relation has been converted to standard rock and the comparison with the data of other experiments has been done. We also present the derived vertical muon spectrum at sea level.

Original languageEnglish
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume58
Issue number9
DOIs
StatePublished - 1998
Externally publishedYes

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