Nuclear Physics A, vol.681, no.1-4, pp.112-115, 2001 (SCI-Expanded)
We compare our Monte Carlo calculations with recent measurements of electron-positron pairs created by collisions of fully stripped 6.4-TeV sulfur ions (γT = 212) and 33-TeV led ions (γT = 168) with Al, Pd and Au targets. In this experiments, the target-charge dependence for the sulfur projectile is Z1.99±0.02p and for the lead projectile is Z2.03±0.03p. These are in very good agreement with perturbative results.