Author/Authors :
FOPI Collaboration، نويسنده , , A Andronic، نويسنده , , G. Stoicea، نويسنده , , M Petrovici، نويسنده , , V Simion، نويسنده , , P Crochet، نويسنده , , J.P. Alard، نويسنده , , R Averbeck، نويسنده , , V Barret، نويسنده , , Z Basrak، نويسنده , , N Bastid، نويسنده , , A Bendarag، نويسنده , , G Berek، نويسنده , , R ?aplar، نويسنده , , Devismes، A. نويسنده , , P. Dupieux، نويسنده , , M D?elalija، نويسنده , , M Eskef، نويسنده , , Ch. Finck، نويسنده , , Z Fodor، نويسنده , , et al.، نويسنده ,
Abstract :
The incident energy at which the azimuthal distributions in semicentral heavy-ion collisions change from in-plane to out-of-plane enhancement — Etran is studied as a function of mass of emitted particles, their transverse momentum and centrality for Au+Au collisions. The analysis is performed in a reference frame rotated with the sidewards flow angle (Θflow) relative to the beam axis.
A systematic decrease of Etran as function of mass of the reaction products, their transverse momentum and collision centrality is evidenced.
The predictions of a microscopic transport model (IQMD) are compared with the experimental results.
Keywords :
Flow angle , Azimuthal distributions , Transition energy , Quantum molecular dynamics model , Nuclear reactions , E=90–400A MeV , Semicentral collisions , Nuclear matter Equation of State
