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The freeze-out process in heavy ion collisions is driven by the competition between the scattering rate and the expansion rate of the matter. We analyse the expansion rate $\Theta$ (often called Hubble flow) in relativistic heavy ion…

Nuclear Theory · Physics 2021-06-09 Gabriele Inghirami , Tom Reichert , Marcus Bleicher

The dynamics of partons and hadrons in relativistic nucleus-nucleus collisions is analyzed within the novel Parton-Hadron-String Dynamics (PHSD) transport approach, which is based on a dynamical quasiparticle model for the partonic phase…

Despite a wealth of experimental data for high p_T processes in heavy-ion collisions, discriminating between different models of hard parton-medium interactions has been difficult. One important reason is that the pQCD parton spectrum at…

High Energy Physics - Phenomenology · Physics 2015-03-19 Thorsten Renk

An integrated Boltzmann+hydrodynamics transport approach is applied to investigate the dependence of the mean transverse mass on the freeze-out and the equation of state over the energy range from $E_{\rm lab}=2-160A $GeV. This transport…

Nuclear Theory · Physics 2009-04-30 Hannah Petersen , Jan Steinheimer , Marcus Bleicher , Horst Stoecker

One of the most remarkable observations in heavy-ion collisions is the systematic regularity exhibited by pseudorapidity distributions of charged particles across collision energies. While single-source models fail at higher energies and…

High Energy Physics - Phenomenology · Physics 2025-12-02 Neeraj , Md. Kaosar Ali Mondal , Amal Sarkar

The five-band Hubbard model for a $d$ band with one electron per site is a model which has very interesting properties when the relevant ions are located at sites with high (e. g. cubic) symmetry. In that case, if the crystal field…

Strongly Correlated Electrons · Physics 2009-11-10 A. B. Harris , T. Yildirim , A. Aharony , O. Entin-Wohlman , I. Ya. Korenblit

This study presents a correlation femtoscopy analysis of relativistic heavy-ion collisions at RHIC Beam Energy Scan (BES) energies using the extended integrated HydroKinetic Model (iHKMe). The model combines initial conditions from UrQMD…

High Energy Physics - Phenomenology · Physics 2025-06-25 Vladislav Naboka , Yuri Sinyukov , Musfer Adzhymambetov , Hanna Zbroszczyk

We study the properties of the strongly-coupled quark-gluon plasma with a multistage model of heavy ion collisions that combines the T$_\mathrm{R}$ENTo initial condition ansatz, free-streaming, viscous relativistic hydrodynamics, and a…

Based on the hadron transport frames, detailed simulations are carried out to discuss $\phi$, $\Omega$ productions and the significant enhancements in the very low $p_T$ region for some of the soft spectra in RHIC. Elastic interactions are…

Nuclear Theory · Physics 2007-06-25 Hong Miao , Chongshou Gao

For heavy-ion collisions at RHIC a scaling behavior is found in the dependencies on azimuthal angle $\phi$ and impact parameter $b$ for pion production at high $p_T$ essentially independent of the hadronization process. The scaling variable…

Nuclear Theory · Physics 2010-04-06 Rudolph C. Hwa , C. B. Yang

We study the thermodynamic and transport properties of hot and dense quantum chromodynamic matter expected to be produced in low-energy heavy-ion collisions, using three different effective quantum chromodynamic frameworks: the…

The characteristics of the particle emitting source are deduced from low transverse momentum identified hadron spectra (transverse mass less than 1 GeV) and HBT radii using a hydrodynamic interpretation. From the most peripheral to the most…

Nuclear Experiment · Physics 2009-11-07 J. M. Burward-Hoy

The size of the emission volume of pions and kaons, r_{\pi\pi} and r_{KK}, were measured in the hadronic Z^0 decays through the two-pion and two-kaon Bose-Einstein correlations near threshold. Recently the emitter size of the two identical…

High Energy Physics - Phenomenology · Physics 2011-07-19 Gideon Alexander , Iuliana Cohen , Eugene Levin

Direct photon emission in heavy-ion collisions is calculated within a relativistic micro+macro hybrid model and compared to the microscopic transport model UrQMD. In the hybrid approach, the high-density part of the evolution is replaced by…

High Energy Physics - Phenomenology · Physics 2010-04-22 Björn Bäuchle , Marcus Bleicher

We study the mass dependent hierarchy of kinetic freeze-out parameters of hadrons in low energy heavy-ion collisions. For this purpose, the transverse momentum and rapidity spectra of the identified hadrons produced in central Pb+Pb…

High Energy Physics - Phenomenology · Physics 2020-11-25 Sudhir Pandurang Rode , Partha Pratim Bhaduri , Amaresh Jaiswal , Ankhi Roy

The interactions of heavy quarks with the partonic environment at finite temperature $T$ and finite quark chemical potential $\mu_q$ are investigated in terms of transport coefficients within the Dynamical Quasi-Particle model (DQPM)…

High Energy Physics - Phenomenology · Physics 2014-11-11 H. Berrehrah , P. B. Gossiaux , J. Aichelin , W. Cassing , J. M. Torres-Rincon , E. Bratkovskaya

The change of hadron properties in dense matter based on various theoretical approaches are reviewed. Incorporating these medium effects in the relativistic transport model, which treats consistently the change of hadron masses and energies…

Nuclear Theory · Physics 2008-11-26 C. M. Ko , G. Q. Li

Transport of charge carriers in mechanically soft semiconductors is mainly limited by their interaction with slow intermolecular phonons. Carrier motion exhibits a crossover from superdiffusive to subdiffusive, producing a distinct…

Strongly Correlated Electrons · Physics 2025-07-08 Veljko Janković

Large Hadron Collider (LHC) had produced a vast amount of high precision data for high energy heavy ion collision. We attempt here to study (i) transverse momenta spectra, (ii) $K/\pi$, $p/\pi$ ratio behaviours, (iii)rapidity distribution,…

High Energy Physics - Phenomenology · Physics 2015-02-20 P. Guptaroy , S. Guptaroy

We use a light cone harmonic oscillator model to study S wave meson spectra, namely the pseudoscalar and vector mesons. The model Hamiltonian is a mass squared operator consisting of a central potential (a harmonic oscillator potential)…

High Energy Physics - Phenomenology · Physics 2009-11-10 Shan-Gui Zhou , Hans-Christian Pauli