Speaker: Giulio PETTINI
Title
Strangeness production in a statistical effective model for hadronisation
Abstract
We discuss a microscopic model for strangeness production in high energy collisions, based on a statistical ansatz for the hadronisation process. The calculation of constituent quark production is based on the mean-field Nambu-Jona Lasinio effective potential supplemented with exact conservation of color and flavor charges over different volumes. We find that, with simple and reasonable assumptions, the relative production of strange quarks with respect to u and d quarks can be well reproduced in all examined collisions, except for some discrepancy in pp collisions. By also fitting the total u, d, s multiplicities, we discuss their compatibility with color deconfinement over large volumes in heavy ion collisions.