Possibilities to Test QCD in Deep-Inelastic Muon Scattering at Large Q exp 2

摘要

The possibilities are discussed to evaluate the moments of the structure function F sub 2 (x, q exp 2 ) in the muon scattering on carbon carried out at the CERN SPS. The predictions of QCD for the kinematic region of q exp 2 of about 100 (GeV/c) exp 2 are compared with the expected experimental accuracy. For this purpose the luminosity of NA-4 set-up and the structure function obtained on deuterium target have been taken into account. The finite primary energies set a limit on q exp 2 reachable. The upper limits were determined requiring 10% accuracy of the approximation of the moments. The influence of the gluons and quarks as well as the second order corrections are illustrated in this q exp 2 range. The analysis of the possibilities of the experiment has shown that the moments can be measured up to q exp 2 of 50, 160, 230 (GeV/c) exp 2 for mu =2, 4, 6 respectively. The statistical accuracy should be sufficient to determine QCD parameters. (Atomindex citation 11:526928)