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Related papers: Core-corona separation in the UrQMD hybrid model

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Simple geometrical considerations show that the collision zone in high energy nuclear collisions may be divided into a central part (``core''), with high energy densities, and a peripheral part (``corona''), with smaller energy densities,…

Nuclear Theory · Physics 2008-11-26 Klaus Werner

In ultrarelativistic heavy ion collisions, the multiplicity of multi-strange baryons per participating nucleon increases with centrality in a different fashion for different systems and energies. At RHIC, for copper+copper (CuCu) collisions…

Nuclear Theory · Physics 2014-11-18 J. Aichelin , K. Werner

We quantify to what degree the QCD matter created in high-energy oxygen--oxygen ($\mathrm{O}+\mathrm{O}$) collisions at $\sqrt{s_{NN}} = 5.36$ TeV reaches a locally equilibrated state. For this purpose, we employ a novel framework based on…

Nuclear Theory · Physics 2026-04-08 Naoya Ito , Tetsufumi Hirano

We report on the core-corona model developed to describe the main features of hyperon global polarization in semicentral relativistic heavy-ion collisions as a function of the collision energy. We first neglect the contribution to…

High Energy Physics - Phenomenology · Physics 2023-01-19 Alejandro Ayala , Isabel Domínguez , Ivonne Maldonado , María Elena Tejeda-Yeomans

The separation of the source created in ultrarelativistic heavy-ion collisions into a thermalized dense core and an outer mantle consisting of independent nucleon-nucleon collisions is discussed. Evidence for such a two component picture is…

Nuclear Theory · Physics 2009-05-05 Piotr Bozek

The multiplicity dependence of multistrange hadron yields in proton-proton and lead-lead collisions at several TeV allows one to study the transition from very big to very small systems, in particular, concerning collective effects. I…

High Energy Physics - Phenomenology · Physics 2024-01-29 K. Werner

It is very well known that the fraction of energy in a hadron collision going into electromagnetic particles (electrons and photons, including those from decays) has a large impact on the number of muons produced in air shower cascades.…

High Energy Physics - Phenomenology · Physics 2023-05-31 Sebastian Baur , Hans Dembinski , Matias Perlin , Tanguy Pierog , Ralf Ulrich , Klaus Werner

To predict line emission in the solar atmosphere requires models which are fundamentally different depending on whether the emission is from the chromosphere or the corona. At some point between the two regions, there must be a change…

Solar and Stellar Astrophysics · Physics 2021-03-03 R. P. Dufresne , G. Del Zanna , N. R. Badnell

We compute the excitation function of the global $\Lambda$ polarization in semicentral heavy-ion collisions within a Core--Corona framework, where the interaction region is described as a dense core and a dilute corona separated by a…

High Energy Physics - Phenomenology · Physics 2026-04-10 Alejandro Ayala , José Jorge Medina Serna , Isabel Domínguez , María Elena Tejeda-Yeomans

I establish the dynamical core--corona initialization framework (DCCI2) as a state-of-the-art dynamical framework that is capable of describing small and large colliding systems at the LHC energies. Under the core--corona picture,…

Nuclear Theory · Physics 2022-08-16 Yuuka Kanakubo

An important observable to understand the properties of the matter produced in heavy-ion collisions is its strangeness content. Recent experimental results show that in semi-central collisions, the $\Lambda$ and $\bar{\Lambda}$ global…

A two-component system of penetrable particles interacting via a gaussian core potential is considered, which may serve as a crude model for binary polymer solutions. The pair structure and thermodynamic properties are calculated within the…

Soft Condensed Matter · Physics 2007-05-23 R. Finken , J. -P. Hansen , A. A. Louis

We report on work aimed to describe the $\Lambda$ and $\bar{\Lambda}$ global polarizations in a heavy-ion collision environment using the core-corona model, where the source of these hyperons is a high-density core and a less dense corona.…

High Energy Physics - Phenomenology · Physics 2022-07-22 Alejandro Ayala , Isabel Domínguez , Ivonne Maldonado , Maria Elena Tejeda-Yeomans

Hadron-hadron collisions at high energies are investigated in the Ultra-relativistic-Quantum-Molecular-Dynamics approach (UrQMD). This microscopic transport model is designed to study pp, pA and A+A collisions. It describes the…

High Energy Physics - Phenomenology · Physics 2008-11-26 M. Bleicher , E. Zabrodin , C. Spieles , S. A. Bass , C. Ernst , S. Soff , L. Bravina , M. Belkacem , H. Weber , H. Stöcker , W. Greiner

We study extreme-ultraviolet emission line spectra derived from three-dimensional magnetohydrodynamic models of structures in the corona. In order to investigate the effects of increased magnetic activity at photospheric levels in a…

Solar and Stellar Astrophysics · Physics 2009-04-16 Pia Zacharias , Sven Bingert , Hardi Peter

The two-band Hubbard model is used to analyze a possibility of a non-uniform charge distribution in a strongly correlated electron system with two types of charge carriers. It is demonstrated that in the limit of strong on-site Coulomb…

Strongly Correlated Electrons · Physics 2009-11-13 A. O. Sboychakov , K. I. Kugel , A. L. Rakhmanov

Very recently the effect of equisized charged hard sphere solutes in a mixture with core-softened fluid model on the structural and thermodynamic anomalies of the system has been explored in detail by using Monte Carlo simulations and…

Soft Condensed Matter · Physics 2013-12-18 B. Hribar-Lee , O. Pizio

A simple approach based on the separation of wounded nucleons in an A-A collision in two categories, those suffering single collisions - corona and the rest - core, estimated within a Glauber Monte-Carlo approach, explains the centrality…

Nuclear Theory · Physics 2017-07-19 M. Petrovici , I. Berceanu , A. Pop , M. Târzilă , C. Andrei

We present results of a phase space coalescence approach within the UrQMD transport and -hybrid model for a very wide range of beam energies from SIS to LHC. The coalescence model is able to qualitatively describe the whole range of…

High Energy Physics - Phenomenology · Physics 2022-03-17 Paula Hillmann , Katharina Käfer , Jan Steinheimer , Volodymyr Vovchenko , Marcus Bleicher

Cool, dense material is frequently observed to permeate the hot, tenuous solar corona in the form of prominences, spicules and coronal rain. Both the cool material and surrounding corona exist at temperatures that are effectively thermally…

Solar and Stellar Astrophysics · Physics 2026-01-30 B. Snow , A. Hillier
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