Related Experiment Video
Updated: Aug 16, 2025

Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Study of Bulk Properties of Strange Particles in Au+Au Collisions at sNN = 54.4 GeV
Li-Li Li1, Abd Al Karim Haj Ismail2,3
1Department of Basic Sciences, Shanxi Agriculture University, Jinzhong 030801, China.
Abstract:
We analyzed the transverse momentum pT spectra of various strange hadrons KS0, Λ(Λ¯) and Ξ-(Ξ¯+) at mid-rapidity (y) in different centrality intervals from Au+Au collisions at sNN= 54.4 GeV. The pT spectra of these strange hadrons are investigated by the Tsallis-like distribution, which satisfactorily fits the experimental data. The bulk properties of the medium produced in ultra-relativistic heavy-ion collisions at the kinetic freeze-out are reflected by measuring the hadron spectra. The effective temperature T, transverse flow velocity βT, and mean pT along with other parameters that are strongly dependent on centrality and particle specie are extracted. The effective temperature of multi-strange particle (Ξ-(Ξ¯+)) is larger as compared to singly-strange particles Λ(Λ¯) and KS0. Furthermore, the kinetic freeze-out temperature T, transverse flow velocity βT. and mean pT (⟨pT⟩) show a decreasing trend towards lower centrality, while the entropy parameter q increases from central to peripheral collisions. In addition, a positive correlation of ⟨pT⟩ and T and a negative correlation of q and T are also reported.
Related Concept Videos
Subatomic Particles
Nuclear Stability
To hold positively charged protons together...
Basic Postulates of Kinetic Molecular Theory: Particle Size, Energy, and Collision

