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

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
32
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW D
ISSN journal
0556-2821 → ACNP
Volume
6011
Issue
11
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].