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Heavy-ion collisions undergo various stages in their evolution and it is crucial to disentangle the initial- and final-stage effects. In this work, we report measurements of two types of observables: (i) charge-dependent directed flow…

Nuclear Experiment · Physics 2025-03-26 Aditya Prasad Dash

We show that a measurement of the reaction energy dependence of relative hadron resonance yields in heavy ion collisions can be used to study the phase structure of the dense QCD matter created in these collisions, and investigate the…

Nuclear Theory · Physics 2008-11-26 Giorgio Torrieri , Johann Rafelski

The time-evolution and space-distribution of internal electromagnetic fields in heavy-ion reactions at beam energies between 200 and 2000 MeV/nucleon are studied within an Isospin-dependent Boltzmann-Uhling-Uhlenbeck transport model IBUU11.…

Nuclear Theory · Physics 2015-05-28 Li Ou , Bao-An Li

The baryon and energy densities attained in fragmentation regions in central Au+Au collisions in the energy range of the Beam Energy Scan (BES) program at the Relativistic Heavy-Ion Collider (RHIC) are estimated within the model of the…

Nuclear Theory · Physics 2018-07-25 Yu. B. Ivanov , A. A. Soldatov

It was proposed that the electric fields may lead to chiral separation in QGP, which is called the chiral electric separation effect. The strong electromagnetic field and the QCD vacuum can both completely be produced in the off-central…

High Energy Physics - Phenomenology · Physics 2016-06-03 Yang Zhong , Chun-Bin Yang , Xu Cai , Sheng-Qin Feng

We study the local equilibrium in the central $V = 125$ fm$^3$ cell in heavy-ion collisions at energies from 10.7 AGeV (AGS) to 160 AGeV (SPS) calculated in the microscopic transport model. In the present paper the hadron yields and energy…

Based on the assumption of the production of deconfined quark matter, we use a quark combination model to systematically investigate hadron yields in heavy ion collisions from RHIC $\sqrt{s_{NN}}=200, 130, 62.4$ GeV to SPS $E_{beam}=158,…

High Energy Physics - Phenomenology · Physics 2010-04-12 Rui-qin Wang , Feng-lan Shao , Jun Song , Qu-bing Xie

In non-central heavy-ion collisions, the quark-gluon plasma (QGP) encounters the most intense magnetic field ever produced in nature, with a strength of approximately 10$^{19 - 20}$ Gauss. Recent lattice-QCD calculations reveal that the QGP…

Nuclear Theory · Physics 2024-07-08 Ze-Fang Jiang , Zi-Han Zhang , Xue-Fei Yuan , Ben-Wei Zhang

Pion production in heavy-ion collisions at intermediate energies provides an important probe of the collision dynamics and nuclear matter equation of state, especially the high-density behavior of the symmetry energy. Using the lattice…

Nuclear Theory · Physics 2025-12-16 Xin Li , Si-Pei Wang , Zhen Zhang , Rui Wang , Jie Pu , Chun-Wang Ma , Lie-Wen Chen

The vast majority of QED results are obtained in relatively weak fields and so in the framework of perturbation theory. However, forthcoming laser facilities providing extremely high fields can be used to enter not-yet-studied regimes.…

Plasma Physics · Physics 2019-07-01 C. Baumann , E. N. Nerush , A. Pukhov , I. Yu. Kostyukov

Emission lines from highly-excited states (n >= 5) of H- and He-like ions have been detected in astrophysical sources and fusion plasmas. For such excited states, R-matrix or distorted wave calculations for electron-impact excitation are…

Instrumentation and Methods for Astrophysics · Physics 2016-08-17 L. Fernandez-Menchero , G. Del Zanna , N. R. Badnell

Recent progress of the quantum molecular dynamics model for describing the dynamics of heavy-ion collisions is viewed, in particular the nuclear fragmentation, isospin physics, particle production and in-medium effect, hadron-induced…

Nuclear Theory · Physics 2018-03-01 Zhao-Qing Feng

There are indications that the beam energy region $\sqrt{s_{NN}} \approx 10$ GeV for heavy-ion collisions is an interesting one. The final state has the highest net baryon density at this beam energy. A transition from a baryon dominated to…

High Energy Physics - Phenomenology · Physics 2017-11-09 J. Cleymans

I review the origin and properties of electromagnetic fields produced in heavy ion collisions. The field strength immediately after a collision is proportional to the collision energy and reaches eB\sim(m_\pi)^2 at RHIC and eB\sim10…

High Energy Physics - Phenomenology · Physics 2013-01-21 Kirill Tuchin

The magnetic fields generated in non-central heavy-ion collisions are among the strongest fields produced in the Universe, reaching magnitudes comparable to the scale of the strong interactions. Backed by model simulations, the resulting…

High Energy Physics - Lattice · Physics 2021-11-29 B. B. Brandt , F. Cuteri , G. Endrődi , G. Markó , A. D. M. Valois

In this lecture we review recent progress in various aspects of non-equilibrium QFT with respect to relativistic heavy ion collisions. As a first and rather general study we summarize our (numerical) investigations for a dissipative quantum…

High Energy Physics - Phenomenology · Physics 2007-05-23 C. Greiner , S. Juchem , Z. Xu

Two microscopic models, UrQMD and QGSM, were employed to study the formation of locally equilibrated hot and dense nuclear matter in heavy-ion collisions at energies from 11.6 AGeV to 160 AGeV. Analysis was performed for the fixed central…

High Energy Physics - Phenomenology · Physics 2008-11-26 L. Bravina , I. Arsene , J. Bleibel , M. Bleicher , G. Burau , Amand Faessler , C. Fuchs , M. S. Nilsson , H. Stoecker , K. Tywoniuk , E. Zabrodin

The event-by-event fluctuations in heavy ion collisions carry information about the thermodynamic properties of the hadronic system at the time of freeze-out. By studying these fluctuations as a function of varying control parameters, such…

High Energy Physics - Phenomenology · Physics 2007-05-23 Krishna Rajagopal

Off-central heavy-ion collisions are known to feature magnetic fields with magnitudes and characteristic gradients corresponding to the scale of the strong interactions. In this work, we employ equilibrium lattice simulations of the…

High Energy Physics - Lattice · Physics 2024-01-05 B. B. Brandt , F. Cuteri , G. Endrődi , G. Markó , L. Sandbote , A. D. M. Valois

We present the detail of a newly developed relativistic transport model (ART 1.0) for high energy heavy-ion collisions. Using this model, we first study the general collision dynamics between heavy ions at the AGS energies. We then show…

Nuclear Theory · Physics 2009-09-25 Bao-An Li , Che Ming Ko