We present the analysis of the muon events with all muon multiplicities collected during 21804 h of operation of the first LVD tower. The measured depth-angular distribution of muon intensities has been used to obtain the normalization factor A the power index (Formula presented) of the primary all-nucleon spectrum, and the ratio (Formula presented) of the prompt muon flux to that of π mesons—the main parameters which determine the spectrum of cosmic ray muons at the sea level. The values of (Formula presented) (68% C.L.) and (Formula presented) (95% C.L.) have been obtained. The upper limit to the prompt muon flux favors the models of charm production based on QGSM and the dual parton model.
|Journal||Physical Review D - Particles, Fields, Gravitation and Cosmology|
|State||Published - 1999|