Adler, S. S. ; Kapoor, S. S. ; et., al (2003) Suppressed π0 production at large transverse momentum in central Au+Au collisions at √sNN=200 GeV Physical Review Letters, 91 (7). 072301_1-072301_6. ISSN 0031-9007
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Official URL: http://prl.aps.org/abstract/PRL/v91/i7/e072301
Related URL: http://dx.doi.org/10.1103/PhysRevLett.91.072301
Abstract
Transverse momentum spectra of neutral pions in the range 1<pT<10 GeV/c have been measured at midrapidity by the PHENIX experiment at BNL RHIC in Au+Au collisions at √sNN=200 GeV. The π0 multiplicity in central reactions is significantly below the yields measured at the same √sNN in peripheral Au+Au and p+p reactions scaled by the number of nucleon-nucleon collisions. For the most central bin, the suppression factor is ~2.5 at pT=2 GeV/c and increases to ~4-5 at pT≈4 GeV/c. At larger pT, the suppression remains constant within errors. The deficit is already apparent in semiperipheral reactions and increases smoothly with centrality.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Physical Society. |
| ID Code: | 16787 |
| Deposited On: | 15 Nov 2010 13:17 |
| Last Modified: | 04 Jun 2011 04:28 |
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