Abstract
Through the collision-system configuration, the Tsallis statistics is combined with a multisource thermal model. The improved model is used to investigate the transverse momentum and pseudorapidity of particles produced in Xe–Xe collisions at sNN=5.44 TeV. We discuss detailedly the thermodynamic properties, which are taken from the transverse momentum pT distributions of π, K, and p for different centralities. The pseudorapidity η spectra of charged particles for different centralities are described consistently in the model. And, the model result can estimate intuitively the longitudinal configuration of the collision system.
Highlights
Guest Editor: Sakina Fakhraddin rough the collision-system configuration, the Tsallis statistics is combined with a multisource thermal model. e improved model is used to investigate the transverse momentum and pseudorapidity of particles produced in Xe–Xe collisions at 푠 = 5.44 TeV
With respect to the final-state observables in these collisions, the particle transverse momentum and pseudorapidity multiplicity are two key measurements to understand the particle-production process and the matter evolution under the extreme conditions. e transverse momentum spectra are very important because they can provide essential information about Quark–Gluon Plasma (QGP) created in the collisions. e charged-particle pseudorapidity multiplicity is related to the early geometry of the collision system and is of great interest to investigate the properties of the collision-system evolution
These particle masses affect the slope of the transverse momentum spectra
Summary
In high-energy nucleon or nuclei collisions, the thermodynamic information of the system evolution is very rich. ese identified particles produced in the collisions may be regarded as a multiparticle system. e identified particles emit from. In the stationary reference frame of a considered source, the distribution function of the particle momentum ὔ is given by. Due to is ὔ a random number distributed evenly in , the distribution function of the particle transverse-momentum in the laboratory reference system frame is. In contrast to the transverse momentum, the particle pseudorapidity in the laboratory reference system frame is not easy to calculate. In the laboratory reference system frame, the Monte Carlo pseudorapidity function of particles from the four parts can be written as. By the ὔ distribution function Equation (1), we can obtain the source pseudorapidity ὔ in the stationary reference frame. En, the pseudorapidity distribution in the laboratory reference frame can be derived from the space scale of the collision system, which is described by the collision Equations (9) and (10)
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