Abstract
The spatial and temporal characteristics of particle emitting source produced in particle and/or nuclear collisions can be measured by using two-particle femtoscopic correlations. These correlations arise due to quantum statistics, Coulomb and strong final state interactions. In this paper we report on the calculations of like-sign pion femtoscopic correlations produced in p+p, p+Au, d+Au, Au+Au at top RHIC energy using Ultra Relativistic Quantum Molecular Dynamics Model (UrQMD). Three-dimensional correlation functions are constructed using the Bertsch-Pratt parametrization of the two-particle relative momentum. The correlation functions are studied in several transverse mass ranges. The emitting source radii of charged pions, Rout, Rside, Rlong, are obtained from Gaussian fit to the correlation functions and compared to data from the STAR and PHENIX experiments.
Highlights
The spatiotemporal structures of particle emitting source in high-energy collisions are essentially defined by the dynamics of the collision processes [1]
We present calculations of the femtoscopic radii of two-pion correlations in p+p and central (0-10% centrality) p+Au, d+Au, Au+Au collisions at top Relativistic Heavy Ion Collider (RHIC) energy sNN = 200 GeV. the Ultra Relativistic Quantum Molecular Dynamics Model (UrQMD) [2, 3, 4, 5] was used to simulate the ion collisions
The two-pion femtoscopic correlations for p+p and central p+Au, d+Au and Au+Au at top RHIC energy are studied with the Ultra Relativistic Quantum Molecular Dynamics Model
Summary
The spatiotemporal structures of particle emitting source in high-energy collisions are essentially defined by the dynamics of the collision processes [1]. We present calculations of the femtoscopic radii of two-pion correlations (referred to as BoseEinstein, or Hanbury-Brown Twiss “HBT”, correlation√s) in p+p and central (0-10% centrality) p+Au, d+Au, Au+Au collisions at top RHIC energy sNN = 200 GeV. The Ultra Relativistic Quantum Molecular Dynamics Model (UrQMD) [2, 3, 4, 5] was used to simulate the ion collisions.
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