Rapidity and energy dependence of average transverse momentum and particle density in saturation models

摘要

Saturation models - colour glass condensate and string percolation - impose a strict relation between the average transverse momentum, < P-T >, and the rapidity particle densities, dn/dy. By combining this relation with an appropriate evolution equation for dn/dy, and imposing energy-momentum conservation, we obtain a fair description of data, for generic A B collisions (hadron-hadron, hadron-nucleus and nucleus-nucleus) at all rapidities and (high) energies. Predictions are given for the LHC.