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Upper limit on the prompt muon flux derived from the LVD underground experiment - art. no. 112001

Authors

Aglietta, M Alpat, B Alyea, ED Antonioli, P Badino, G Bari, G Basile, M Berezinsky, VS Bersani, F Bertaina, M Bertoni, R Bonoli, G Bosco, A Bruni, G Romeo, GC Castagnoli, C Castellina, A Chiavassa, A Chinellato, JA Cifarelli, L Cindolo, F Conforto, G Contin, A Dadykin, VL De Silva, A Deutsch, M Dominici, P Dos Santos, LG Emaldi, L Enikeev, RI Fabbri, FL Fulgione, W Galeotti, P Ghetti, C Ghia, P Giusti, P Granella, R Grianti, F Guidi, G Hafen, ES Haridas, P Iacobucci, G Inoue, N Kemp, E Khalchukov, FF Korolkova, EV Korchaguin, PV Korchaguin, VB Kudryavtsev, VA Lau, K Luvisetto, M Maccarone, G Malguin, AS Mantovani, R Massam, T Mayes, B Megna, A Melagrana, C Silva, NM Morello, C Moromisato, J Nania, R Navarra, G Panaro, L Periale, L Pesci, A Picchi, P Pinsky, L Pless, IA Pyrlik, J Ryasny, VG Ryazhskaya, OG Saavedra, O Saitoh, K Santini, S Sartorelli, G Selvi, M Taborgna, N Talochkin, VP Tang, J Trinchero, GC Tsuj, S Turtelli, A Uman, I Vallania, P Van Buren, G Vernetto, S Vetrano, F Vigorito, C von Goeler, E Votano, L Wada, T Weinstein, R Widgoff, M Yakushev, VF Yamamoto, I Zatsepin, GT Zichichi, A

Citation

M. Aglietta et al., Upper limit on the prompt muon flux derived from the LVD underground experiment - art. no. 112001, PHYS REV D, 6011(11), 1999, pp. 2001

Citations number

Categorie Soggetti

Physics

Journal title

PHYSICAL REVIEW D

ISSN journal

05562821 → ACNP

Volume

6011

Issue

Year of publication

1999

Database

ISI

SICI code

0556-2821(199912)6011:11<2001:ULOTPM>2.0.ZU;2-C

Abstract

We present the analysis of the muon events with all muon multiplicities col lected during 21804 h of operation of the first LVD tower. The measured dep th-angular distribution of muon intensities has been used to obtain the nor malization factor A the power index gamma of the primary all-nucleon spectr um, and the ratio R-c of the prompt muon flux to that of pi mesons-the main parameters which determine the spectrum of cosmic ray muons at the sea lev el. The values of gamma = 2.77 +/- 0.05 (68% C.L.) and R-c < 2.0 X 10(-3) ( 95% C.L.) have been obtained. The upper limit to the prompt muon flux favor s the models of charm production based on QGSM and the dual parton model. [ S0556-2821(99)03917-X].