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Centrality Dependence of Neutral Pion Production in 158A GeV $^{208}$Pb+$^{208}$Pb Collisions

Madan M. Aggarwal, +163 more
- 09 Nov 1998 - 
- Vol. 81, Iss: 19, pp 4087-4091
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TLDR
In this article, the centrality dependence of the neutral pion spectral shape and yield was investigated in the WA98 experiment at the CERN Super Proton Synchrotron (SPS).
Abstract
The production of neutral pions in 158A GeV {sup 208}Pb+ {sup 208}Pb collisions has been studied in the WA98 experiment at the CERN Super Proton Synchrotron (SPS). Transverse momentum spectra are studied for the range 0.3{le}m{sub T}{minus}m{sub 0}{le}4.0 GeV /c . The results for central collisions are compared to various models. The centrality dependence of the neutral pion spectral shape and yield is investigated. An invariance of the spectral shape and a simple scaling of the yield with the number of participating nucleons is observed for centralities with greater than about 30thinspthinspparticipating nucleons. This is most naturally explained by assuming an equilibrated system. {copyright} {ital 1998} {ital The American Physical Society }

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Experimental and theoretical challenges in the search for the quark-gluon plasma: The STAR Collaboration's critical assessment of the evidence from RHIC collisions

Joseph Adams, +366 more
- 08 Aug 2005 - 
TL;DR: In this paper, the most important experimental results from the first three years of nucleus-nucleus collision studies at RHIC were reviewed, with emphasis on results of the STAR experiment.
Journal ArticleDOI

Parton saturation and Npart scaling of semi-hard processes in QCD

TL;DR: In this article, it was shown that the suppression of high p t hadrons discovered recently in heavy ion collisions at RHIC may be a consequence of saturation in the color glass condensate.
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Matter in extremis: Ultrarelativistic nuclear collisions at RHIC

TL;DR: In this article, the authors review the physics of nuclear matter at high energy density and the experimental search for the Quark-Gluon Plasma at the Relativistic Heavy Ion Collider (RHIC) and provide several lines of evidence that a novel state of matter has been created in the most violent head-on collisions of Au nuclei at √ s = 200 GeV.
Journal ArticleDOI

Signatures of quark-gluon plasma formation in high energy heavy-ion collisions: a critical review

TL;DR: A critical review on signatures of quark-gluon plasma (QGP) formation is given and the current (1998) experimental status is discussed in this paper, where the authors focus on observables which may yield experimental evidence for QGP formation.
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Parton saturation and N_part scaling of semi--hard processes in QCD

TL;DR: In this article, it was shown that if parton saturation sets in at sufficiently small energy, then in nucleus-nucleus collisions at RHIC and LHC energies the cross sections of semi-hard processes should scale approximately with the number of participants.
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