Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2011-03-17
Physics
Nuclear Physics
Nuclear Experiment
16 pages, 17 figures, submitted to Phys. Rev. C
Scientific paper
We present a method for parameterizing the charged particle multiplicity and charged hadron spectra from heavy ion data with a simple, Glauber-inspired, model. The basis of this model is derived from the observation of leading hadrons in $pp$ collisions and the number of interactions calculated by a Glauber model. Singly hit and multiply hit nucleons are treated as different sub-components of the same collision. With this scheme, for fixed sub-component yields, we find that the multiplicity and charged hadron spectra can be reproduced, without the need for large suppression at high-p$_T$. Suppression is still observed, in the low- to intermediate-p$_T$ region, but this is confined to suppression of surface emission partons. At high-p$_T$, the suppression disappears entirely, leaving only a possible Cronin-type enhancement. The suppression observed in 200GeV collisions is found to be the same for 62.4GeV data.
Hofman David J.
Hollis R. S.
Iordanova Aneta
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