2007/02/22 by D. Das, Debasish Das
Physics and Astronomy · #Centrality #Collision #Hadron #High-Energy Particle Collisions Research #Impact parameter #Interferometry #Meson #Multiplicity (mathematics) #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Pion #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Rapidity #Scaling #Transverse mass #nucl-ex
paper · pdf · doi:10.1142/s0218301307007179
published as Int.J.Mod.Phys.E16:1883-1889,2007 · (for the STAR Collaboration) 6 pages and 5 figures Poster presented at 19th International Conference on Ultra-relativistic Nucleus-Nucleus Collisions: Quark Matter 2006 (QM 2006), Shanghai, China, 14-20 Nov. 2006. To be published in International Journal of Modern Physics E (World Scientific)
arxiv created 2007/02/22 · openalex publication_date 2007/08/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The influence of Bose–Einstein statistics on multi-particle production characterized for various systems and energies by the STAR collaboration provides interesting information about the space-time dynamics of relativistic heavy-ion collisions at RHIC. We present the centrality and transverse mass dependence measurements of the two-pion interferometry in Au + Au collisions at [Formula: see text] and Cu + Cu collisions at [Formula: see text] and 200 GeV. We compare the new data with previous STAR measurements from p + p , d + Au and Au + Au collisions at [Formula: see text]. In all systems and centralities, HBT radii decrease with transverse mass in a similar manner, which is qualitatively consistent with collective flow. The scaling of the apparent freeze-out volume with the number of participants and charged particle multiplicity is studied. Measurements of Au + Au collisions at same centralities and different energies yield different freeze-out volumes, which mean that N part is not a suitable scaling variable. The multiplicity scaling of the measured HBT radii is found to be independent of colliding system and collision energy.