Description
Parton distributions in the protons colliding with multiplicity much higher than the mean value, are biased to higher parton densities, leading to enhanced effects of saturation. This and the effect of mutual boosting of the saturation scale significantly increase the gluon density at small x, and correspondingly the production rate of J/psi and pT broadening, in good accord with data.
Primary authors
Dr
Boris Kopeliovich
(Universidad Tecnica Federico Santa Maria)
Prof.
Hans Juergen Pirner
(Heidelberg U.)
Dr
Irina Potashnikova
(Universidad Tecnica Federico Santa Maria)
Prof.
Klaus Johannes Reygers
(Heidelberg U.)
Prof.
Ivan Schmidt
(Universidad Tecnica Federico Santa Maria)
