Heavy ion collision multiplicities and gluon distribution functions
arXiv:hep-ph/0106330 · doi:10.1016/S0375-9474(01)01308-2
Abstract
Atomic number ($A$) and energy ($\roots$) scaling exponents of multiplicity and transverse energy in heavy ion collisions are analytically derived in the perturbative QCD + saturation model. The exponents depend on the small-$x$ behaviour of gluon distribution functions at an $x$-dependent scale. The relation between initial state and final state saturation is also discussed.
15 pages, 4 eps-figures