arXiv:0906.2976·v1·High Energy Physics — Phenomenology
Rapidity and energy dependence of average transverse momentum and particle density in saturation models
P. Brogueira (IST)🇵🇹 · J. Dias de Deus (CENTRA-Ist)🇵🇹 · J. G. Milhano (CENTRA-Ist and CERN PH-TH)🇵🇹
Abstract
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 AB collisions (hadron-hadron, hadron-nucleus and nucleus-nucleus) at all rapidities and (high) energies. Predictions are given for the LHC.
Comments: 16 pages, 4 figures, 2 tables