Acta Physica Polonica B

Vol. 36, No. 2, February 2005, page 227


Puzzles at High pT at RHIC and Their Resolution

R.C. Hwa

Several puzzles about the data at high pT in heavy-ion collisions are listed. The resolution of them all is given in the framework of parton recombination. More specifically, it is the recombination of the soft and semi-hard shower partons that enhances the region 3

T<9 GeV/c, and gives rise to the large p/\pi ratio in Au Au collisions. The Cronin effect can be explained in terms of final-state interaction for both \pi and p. The structure of jets produced in Au Au is different from that in pp collisions. The suppression of RCP in forward production can also be understood by extending the same hadronization scheme at \eta =0 to \eta >0 without the introduction of any new physics.

PACS numbers: 25.75.--q


Full paper:  v36p0227.pdf (PDF  131 KB)
 
Table of Contents Back to Number 2 contents