Investigation of Pionic Contribution in the Lepton and Antilepton Production Cross Section in p-Cu and p-Pt Collision

Figure 9

Dileptons production cross section for p-Cu collision in terms of according to (13) for , 0, 0.1, and 0.4 and . The full curve is obtained by considering the pionic contribution and the dashed line is plotted without considering the pionic contribution. The used factor has been indicated in each graph. The difference between full and dashed lines is about 3–8. The experimental results have been taken from [19].