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1

Elliptic flow at RHIC with NeXSPheRIO

Andrade R., Grassi F., Hama Y., Kodama T., Socolovski Jr. O., Tavares B.

Nukleonika

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2006

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Vol. 51,suppl.3

17-20

EN

Elliptic flow at RHIC is computed event-by-event with NeXSPheRIO. Reasonable agreement with experimental results on v2(h) is obtained. Various effects are studied as well: reconstruction of impact parameter direction, freeze-out temperature, equation of state (with or without crossover), emission mechanism.

2

Charge transfer fluctuations as a QGP signal

Jeon S., Shi L., Bleicher M.

Nukleonika

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2006

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Vol. 51,suppl.3

65-68

EN

In this study, we analyze the recently proposed charge transfer fluctuations within a finite pseudorapidity space. As the charge transfer fluctuation is a measure of the local charge correlation length, it is capable of detecting inhomogeneity in the hot and dense matter created by heavy-ion collisions. We predict that going from peripheral to central collisions, the charge transfer fluctuations at midrapidity should decrease substantially while the charge transfer fluctuations at the edges of the observation window should decrease by a small amount. These are consequences of having a strongly inhomogeneous matter where the QGP component is concentrated around midrapidity. We also show how to constrain the values of the charge correlations lengths in both the hadronic phase and the QGP phase using the charge transfer fluctuations. Current manuscript is based on the two recent papers [10, 13].

3

Particle correlations to be seen by ALICE

Pluta J., Chajęcki Z., Gos H., Skowroński P.

Nukleonika

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2004

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Vol. 49,suppl.2

103-108

EN

The possibilities of ALICE experiment in measurements of particle correlations are estimated by computer simulations. A dedicated software has been created with the aim to study the influence of different experimental factors on the shape of correlation functions and with the intention to serve in the future for the analysis of real data. A scheme of correlation analysis is described shortly and some of the first results are presented. This analysis is being performed in the frame of ALICE "Physics Performance Report".

4

Hadron resonance probes of QGP

Torrieri G., Rafelski J.

Nukleonika

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2004

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Vol. 49,suppl.2

109-114

EN

We discuss the indirect and direct role of the short-lived resonances as probes of QGP freeze-out process. The indirect effect is the distortion of stable single particle yields and spectra by contributions of decaying resonances, which alter significantly the parameters obtained in fits to experimental data. We then discuss the direct observation of short-lived resonances as a probe of post-hadronization dynamics allowing to distinguish between different hadronization models.

5

Buda-Lund hydro model and the elliptic flow at RHIC

Csanád M., Csörgo T., Lörstad B., Ster A.

Nukleonika

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2004

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Vol. 49,suppl.2

45-48

EN

The ellipsoidally symmetric Buda-Lund hydrodynamic model describes naturally the transverse momentum and the pseudorapidity dependence of the elliptic flow in Au+Au collisions at sNN = 130 and 200 GeV. The result confirms the indication of quark deconfinement in Au+Au collisions at RHIC, obtained from Buda-Lund hydro model fits to combined spectra and HBT radii of BRAHMS, PHOBOS, PHENIX and STAR.