Nonlinear Phenomena in Complex Systems, 2009, Vol.12, No.4, pp.323-327

NONLINEAR PHENOMENA IN COMPLEX SYSTEMS
An Interdisciplinary Journal

2009, Vol.12, No.4, pp.323-327

Systematics of Parton Fragmentation in e⁺- e^- and Nuclear Collisions.
Thomas A. Trainor

Parameterizations of fragmentation functions (FFs) from e⁺-e^- and collisions are combined with a parton spectrum model in a pQCD folding integral to produce minimum-bias fragment distributions. A model of in-medium FF modification is included. Calculated fragment distributions are compared with hard components from p-p and Au-Au p_t spectra. Data are well described by pQCD over a large kinematic region for a range of Au-Au centralities.
Key words: fragmentation,jet quenching,pQCD,heavy ion collisions,two-component model

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