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Related papers: Imprints of dynamic fluidization on dilepton produ…

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Dilepton invariant-mass spectra for heavy-ion collisions at SIS 18 and BEVALAC energies are calculated using a coarse-grained time evolution from the Ultra-relativistic Quantum Molecular Dynamics (UrQMD) model. The coarse-graining of the…

Nuclear Theory · Physics 2015-08-04 Stephan Endres , Hendrik van Hees , Janus Weil , Marcus Bleicher

Fluid dynamic approach is a workhorse for modelling collective dynamics in relativistic heavy-ion collisions. The approach has been successful in describing various features of the momentum distributions of hadrons produced in the heavy-ion…

Nuclear Theory · Physics 2021-08-04 Iurii Karpenko

This work reports on investigations of the effects on the evolution of viscous hydrodynamics and on the flow coefficients of thermal dileptons, originating from a temperature-dependent specific shear viscosity $\eta/s (T)$ at temperatures…

Nuclear Theory · Physics 2018-07-18 Gojko Vujanovic , Gabriel S. Denicol , Matthew Luzum , Sangyong Jeon , Charles Gale

We give a short review of hydrodynamic models at heavy ion collisions from the point of view of initial conditions, an equation of states (EoS) and freezeout process. Then we show our latest results of a combined fully three-dimensional…

Nuclear Theory · Physics 2008-11-26 Chiho Nonaka

A hybrid (hydrodynamics + hadronic transport) theoretical framework is assembled to model the bulk dynamics of relativistic heavy-ion collisions at energies accessible in the Beam Energy Scan (BES) program at the Relativistic Heavy-Ion…

Nuclear Theory · Physics 2019-07-26 Gabriel S. Denicol , Charles Gale , Sangyong Jeon , Akihiko Monnai , Björn Schenke , Chun Shen

We analyze the opportunity to observe thermal dileptons emitted off deconfined matter resulting in heavy-ion collisions at RHIC and LHC energies. Special kinematical conditions provided by the detector systems PHENIX and ALICE, and the…

High Energy Physics - Phenomenology · Physics 2008-11-26 K. Gallmeister , B. Kämpfer , O. P. Pavlenko

Ultra-relativistic heavy-ion collisions are used to create a deconfined state of quarks and gluons, the quark-gluon plasma (QGP), similar to the matter in the early universe. Dileptons are a unique probe of the QGP. Being emitted during all…

Nuclear Experiment · Physics 2025-12-12 R. Bailhache , H. Appelshäuser

We investigate the boost-invariant expansion of a recently developed first-order spin hydrodynamic framework in which the spin chemical potential is treated as a leading-order hydrodynamic variable. Considering a symmetric energy-momentum…

Nuclear Theory · Physics 2026-04-07 Sejal Singh , Sourav Dey , Arpan Das , Hiranmaya Mishra , Amaresh Jaiswal

We reinterpret the dilepton emission rate from a hadronic gas expected to be produced in heavy ion collisions in terms of the spectral functions available from the $e^+e^-$ annihilation and the $\tau$ lepton decays experiments. We take into…

High Energy Physics - Phenomenology · Physics 2015-06-25 Zheng Huang

A fireball model with time evolution based on transport calculations is used to examine the dilepton emission rate of an ultra-relativistic heavy-ion collision. We assume a transition from hadronic matter to a quark-gluon plasma at a…

High Energy Physics - Phenomenology · Physics 2009-10-31 R. A. Schneider , W. Weise

This work calculates the first correction to the leading order q\={q} dilepton production rates due to shear viscosity in an expanding gas. The modified rates are integrated over the space-time history of a viscous hydrodynamic simulation…

Nuclear Theory · Physics 2008-11-26 Kevin Dusling , Shu Lin

In order to investigate the importance of pre-equilibrium dynamics on relativistic heavy-ion collision observables, we match a highly non-equilibrium early evolution stage, modeled by free-streaming partons generated from the Monte Carlo…

Nuclear Theory · Physics 2015-04-10 Jia Liu , Chun Shen , Ulrich W. Heinz

Collective behaviour has been observed in hadronic measurements of high multiplicity proton+lead collisions at the Large Hadron Collider (LHC), as well as in (proton, deuteron, helium-3)+gold collisions at the Relativistic Heavy-Ion…

Nuclear Theory · Physics 2017-01-25 Chun Shen , Jean-François Paquet , Gabriel S. Denicol , Sangyong Jeon , Charles Gale

The search for a first-order phase transition in strongly interacting matter is one of the major objectives in the exploration of the phase diagram of Quantum Chromodynamics (QCD). In the present work we investigate dilepton radiation from…

The hadronic transport model \textsc{art} is extended to include the production and annihilation of deuterons via the reactions $BB \leftrightarrow dM$, where $B$ and $M$ stand for baryons and mesons, respectively, as well as their elastic…

Nuclear Theory · Physics 2009-12-14 Yongseok Oh , Zi-Wei Lin , Che Ming Ko

The Hamiltonian structures of several hybrid kinetic-fluid models are identified explicitly, upon considering collisionless Vlasov dynamics for the hot particles interacting with a bulk fluid. After presenting different pressure-coupling…

Plasma Physics · Physics 2010-07-29 Cesare Tronci

Dilepton and photon production in heavy-ion collisions at SPS energies are studied in the relativistic transport model that incorporates self-consistently the change of hadron masses in dense matter. It is found that the dilepton spectra in…

Nuclear Theory · Physics 2009-10-30 G. Q. Li , G. E. Brown , C. M. Ko

The relativistic hydrodynamics together with the single-freeze-out statistical hadronization model is used to describe the midrapidity hadron production in ultra-relativistic heavy-ion collisions at RHIC and LHC. At the highest RHIC energy…

Nuclear Theory · Physics 2008-12-19 Wojciech Florkowski , Mikolaj Chojnacki , Wojciech Broniowski , Adam Kisiel

Utilizing a coarse-graining method to convert hadronic transport simulations of Au+Au collisions at SIS energies into local temperature, baryon and pion densities, we compute the pertinent radiation of thermal dileptons based on an…

Nuclear Theory · Physics 2016-05-19 Tetyana Galatyuk , Paul M. Hohler , Ralf Rapp , Florian Seck , Joachim Stroth

We study the effect of vorticity present in heavy ion collisions (HICs) on the temperature evolution of hot quark-gluon plasma in the presence of spin-vorticity coupling. The initial global rotation entails a nontrivial dependence of the…

High Energy Physics - Phenomenology · Physics 2019-07-24 Jitesh R Bhatt , Hiranmaya Mishra , Balbeer Singh