Volume 118, Number 4, May 2017
|Number of page(s)||7|
|Section||The Physics of Elementary Particles and Fields|
|Published online||24 July 2017|
Centrality and system size dependence of φ meson production at RHIC
1 Department of Physics, Islamic University of Science and Technology - Awantipora, Kashmir-192122 India
2 Department of Physics, Jamia Millia Islamia (Central University) - New Delhi-110025 India
Received: 6 June 2017
Accepted: 3 July 2017
We study the centrality and system size dependence of φ meson production by reproducing its transverse-momentum distributions and mid-rapidity distributions (dN/dy) for various collision systems of Au+Au, Cu+Cu, d+Au and p+p at various RHIC energies of , 130 GeV and 200 GeV by using Unified Statistical Thermal Freeze-out Model (USTFM). The calculated results are found to be in good agreement with the experimental data points taken from the STAR experiment. Freeze-out conditions in terms of transverse flow velocity and thermal freeze-out temperature are extracted from the fits of transverse-momentum spectra of the particles at different centrality classes and for different collision systems. The transverse size of the system in terms of transverse-radius parameter is determined from the fits of rapidity distributions at various centrality classes and for various collision systems.
PACS: 12.40.Ee – Statistical models / 12.38.Mh – Quark-gluon plasma / 14.40.Be – Light mesons (
© EPLA, 2017
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