Topics on hydrodynamic model of nucleus-nucleus collisions

Global Properties of Nucleus-Nucleus Collisions

On the measurement of azimuthal anisotropies in nucleus–nucleus collisions

Azimuthal distributions of particles produced in nucleus-nucleus collisions are measured with respect to an estimated reaction plane which, because of finite multiplicity fluctuations, differs in general from the true reaction plane. It follows that the measured distributions do not coincide with the true ones. I propose a general method of reconstructing the Fourier coefficients of the true az...

On the Early Stage of Nucleus–Nucleus Collisions

A statistical model of the early stage of central nucleus–nucleus collisions is developed and confronted with the experimental data. The analysis leads to the conclusion that a Quark Gluon Plasma is created in central nucleus–nucleus collisions at the SPS. The localization and the properties of the transition region are discussed. It is shown that the transition can be detected by observation o...

Nucleus-nucleus Bremsstrahlung from Ultrarelativistic Collisions

The bremsstrahlung produced when heavy nuclei collide is estimated for central collisions at the Relativistic Heavy Ion Collider. Soft photons can be used to infer the rapidity distribution of the outgoing charge. An experimental design is outlined. 25.75.-q, 13.40.-f Typeset using REVTEX ∗[email protected] †[email protected] ‡[email protected] §sansweiss@hepmai...

Anisotropy in High Energy Nucleus - Nucleus Collisions

The predictions of event anisotropy parameters from transport model RQMD are compared with the recent experimental measurements for 158A GeV Pb+Pb collisions. Using the same model, we study the time evolution of event anisotropy at 2A GeV and 158A GeV for several colliding systems. For the first time, both momentum and configuration space information are studied using the Fourier analysis of th...