Pion interferometry at RHIC: probing a thermalized quark-gluon-plasma?

  • We calculate the Gaussian radius parameters of the pion-emitting source in high energy heavy ion collisions, assuming a first order phase transition from a thermalized Quark-Gluon-Plasma (QGP) to a gas of hadrons. Such a model leads to a very long-lived dissipative hadronic rescattering phase which dominates the properties of the two-pion correlation functions. The radii are found to depend only weakly on the thermalization time tau i, the critical temperature T c (and thus the latent heat), and the specific entropy of the QGP. The dissipative hadronic stage enforces large variations of the pion emission times around the mean. Therefore, the model calculations suggest a rapid increase of R out/R side as a function of K T if a thermalized QGP were formed.

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Author:Sven SoffORCiD, Steffen A. BassORCiDGND, Adrian Bogdan DumitruGND
Document Type:Preprint
Year of Completion:2001
Year of first Publication:2001
Publishing Institution:Universit├Ątsbibliothek Johann Christian Senckenberg
Release Date:2005/04/14
Source:http://de.arxiv.org/abs/nucl-th/0012085 , Report-no: BNL-NT-00/28
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht