Suppressed pi(0) production at large transverse momentum in central Au plus Au collisions at root s(NN)=200 GeV

Date
2003-08-01
Authors
Adler, S.
Ogilvie, Craig
Belikov, Sergey
Bhagavatula, S.
Constantin, Paul
Grau, Nathan
Hill, John
Lajoie, John
Lebedev, Alexandre
Ogilvie, Craig
Rak, Jan
Rosati, Marzia
Wohn, F.
et al.
Journal Title
Journal ISSN
Volume Title
Publisher
Source URI
Altmetrics
Authors
Research Projects
Organizational Units
Physics and Astronomy
Organizational Unit
Journal Issue
Series
Abstract

Transverse momentum spectra of neutral pions in the range 1 < p(T) < 10 GeV/c have been measured at midrapidity by the PHENIX experiment at BNL RHIC in Au+Au collisions at roots(NN)=200 GeV. The pi(0) multiplicity in central reactions is significantly below the yields measured at the same roots(NN) 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 similar to 2.5 at p(T)=2 GeV/c and increases to similar to 4-5 at p(T) approximate to 4 GeV/c. At larger p(T), the suppression remains constant within errors. The deficit is already apparent in semiperipheral reactions and increases smoothly with centrality.

Description
<p>This article is published as Adler, Stephen Scott, S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, J. Alexander, R. Amirikas et al. "Suppressed π0 Production at Large Transverse Momentum in Central Au+ Au Collisions at sNN = 200 GeV." <em>Physical Review Letters</em> 91, no. 7 (2003): 072301. DOI:<a href="http://dx.doi.org/10.1103/PhysRevLett.91.072301" target="_blank">10.1103/PhysRevLett.91.072301</a>. Posted with permission.</p>
Keywords
Citation
Collections