|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'504'928
Articles rated: 2609
26 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Scaling of particle production with number of participants in high-energy A+A collisions in the parton-cascade model | | Dinesh Kumar Srivastava
; Klaus Geiger
; | | Date: |
25 Jun 1999 | | Journal: | Nucl.Phys. A661 (1999) 592-595 | | Subject: | nucl-th | | Affiliation: | Variable Energy Cyclotron Centre, Calcutta) and Klaus Geiger (Physics Department, Brookhaven National Laboratory, Upton, New York, U. S. A | | Abstract: | In view of the recent WA98 data of $pi^0$ spectra from central Pb+Pb collisions at the CERN SPS, we analyze the production of neutral pions for A+A collisions across the periodic table at $sqrt{s}=17$ AGeV and 200 AGeV within the framework of the parton-cascade model for relativistic heavy ion collisions. The multiplicity of the pions (having $p_T > 0.5$ GeV) in the central rapidity region, is seen to scale as $sim (N_{part})^{alpha}$, where $N_{part}$ is the number of participating nucleons, which we have approximated as 2A for central collisions of identical nuclei. We argue that the deviation of $alpha$ ($simeq 1.2$) from unity may have its origin in the multiple scattering suffered by the partons. We also find that the constant of proportionality in the above scaling relation increases substantially in going from SPS to RHIC energies. This would imply that the (semi)hard partonic activity becomes a much cleaner signal above the soft particle production at the higher energy of RHIC, and thus much less dependent on the (lack of) understanding of the underlying soft physics background. | | Source: | arXiv, nucl-th/9906080 | | Other source: | [GID 52470] nucl-th/9808042 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER