Abstract
Transverse momentum distributions of final-state particles produced in soft process in proton-proton (pp) and nucleus-nucleus (AA) collisions at Relativistic Heavy Ion Collider (RHIC) and Large Hadron Collider (LHC) energies are studied by using a multisource thermal model. Each source in the model is treated as a relativistic and quantum ideal gas. Because the quantum effect can be neglected in investigation on the transverse momentum distribution in high energy collisions, we consider only the relativistic effect. The concerned distribution is finally described by the Boltzmann or two-component Boltzmann distribution. Our modeling results are in agreement with available experimental data.
Highlights
High energy collisions are an important research topic in particle and nuclear physics
The Large Hadron Collider (LHC) at European Laboratory for Particle Physics (CERN) renovated value of √sNN to TeV region [3]. It seems that a new state of matter, namely, Quark-Gluon Plasma (QGP), is possibly formed in heavy ion collisions at Relativistic Heavy Ion Collider (RHIC) and LHC energies due to high temperature and density [4, 5]
At initial stage of high energy collisions, another possible new state of matter, namely, color glass condensate (CGC), is caused by strong color fields in the low-x gluon realm [6, 7], where x denotes the ratio of quark or gluon momentum to hadron one
Summary
High energy collisions are an important research topic in particle and nuclear physics. The Large Hadron Collider (LHC) at European Laboratory for Particle Physics (CERN) renovated value of √sNN to TeV region [3] It seems that a new state of matter, namely, Quark-Gluon Plasma (QGP), is possibly formed in heavy ion collisions at RHIC and LHC energies due to high temperature and density [4, 5]. At initial stage of high energy collisions, another possible new state of matter, namely, color glass condensate (CGC), is caused by strong color fields in the low-x gluon realm [6, 7], where x denotes the ratio of quark or gluon momentum to hadron one. For transverse excitation, soft excitation and hard scattering processes can affect, respectively, distributions in low- and high-pT ranges. Due to significances of the considered model and topic, in this paper, based on Boltzmann distribution for a single source, we describe pT spectra of final-state particles.
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