Cosmic-ray muon spectrum derived from the transferred energy spectrum of bursts observed by the mutron calorimeter

Inelastic scattering of cosmic ray muons on iron nuclei and the virtual photon shadowing

“…Results given here are based on the recognit<ion that the theory of the electromagnetic muon interactions is correct and precise enough for the present st.udy. We do not care for the absolute muon intensity, which has been discussed elsewhere [5]. Scales in figures are normalized to expected values from the electromagnetic theory.8) It is also noted that the fraction of visible energy for the hadronic shower is assumed to be 80% constant.…”

“…Fitted parameters are in Table A-1. At high energy v 2 50 GeV, the calculated oT(Q2 = 0) (by the present author) approaches to a constant value; N 110 pb for R = Q2/v2, and N 95 pb for R = 0.18. The structure function F , as a function of x( = l/w) and Q 2 is given by -l4 + 9 5 (1 -X)3t01 Q2 Q2 + mo2 F2 = P3(2 + g3) z( 1 -X ) ' +~S + p, -* -9 5 + g 5 where 93 = 9 0 3 + 95 = SO5 + E = x In [ ( Q 2 + mo2)/mo21, and P3, P5, go,, 905, x and mo are free parameters. The first term considers scattering froin a state of three valence quarks and gs gluons.…”

“…The average is 0.65 mrad with the averaged spark resolution of 0.8 mm.The deposites energy E in the calorimeter is calculated by means of so called the total track length where, ni : equivalent number of particles in the i-th layer, t i : depth (r.1.) of the i-th layer, and E~ is a parameter to be determined through the calibration.The equivalent number of particles is defined here as the corresponding pulse height counted in unit of the average pulse height of single muon[5], which is about 1.25 times Correlation between AP (momentum difference between incoming muon and outgoing muon) and E (detected shower energy) for 'electron-like' events.…”