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Dilepton production provides a unique probe of the strong electromagnetic field produced in heavy-ion collisions. To map out the behavior of its transverse momentum broadening, we present a theoretical model based on the equivalent photon…

Nuclear Theory · Physics 2024-06-14 Kewei Yu , Jiazhen Peng , Shuang Li , Kejun Wu , Wei Xie , Fei Sun

Dilepton production in heavy-ion collisions at collider energies - i.e., for the Relativistic Heavy-Ion Collider (RHIC) and the Large Hadron Collider (LHC) - is studied within an approach that uses coarse-grained transport simulations to…

Nuclear Theory · Physics 2016-08-22 Stephan Endres , Hendrik van Hees , Marcus Bleicher

We study dilepton production from a thermally equilibrating quark-gluon plasma expected to be formed in ultra relativistic heavy-ion collisions. The pre-equilibrium dynamics of quark-gluon plasma is studied within the color flux-tube model…

High Energy Physics - Phenomenology · Physics 2009-10-31 Gouranga C Nayak

The dependence of the spectra shape of produced charged hadrons on the size of a colliding system is discussed using a two component model. As a result, the hierarchy by the system-size in the spectra shape is observed. Next, the…

High Energy Physics - Phenomenology · Physics 2014-07-16 A. A. Bylinkin , N. S. Chernyavskaya , A. A. Rostovtsev

We perform a systematic study of dilepton emission in a hot QCD medium based on three different scenarios of chiral mixing, each of which yields a characteristic structure in the vector spectral function. The in-medium spectral functions…

Nuclear Theory · Physics 2023-08-08 Azumi Sakai , Masayasu Harada , Chiho Nonaka , Chihiro Sasaki , Kenta Shigaki , Satoshi Yano

The entropy production occurring in relativistic hydrodynamical systems such as the quark-gluon plasma (QGP) formed in high-energy nuclear collisions is explored. We study mechanisms which change the composition of the fluid, i.e. particle…

High Energy Physics - Phenomenology · Physics 2008-11-26 H. -Th. Elze , J. Rafelski , L. Turko

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

A systematic study of intermediate invariant mass dilepton production in Pb+Pb collisions at $\sqrt{s_{NN}} = 5.02$ TeV is performed, using next-to-leading-order (NLO) thermal QCD dilepton emission rates with a multistage dynamical approach…

Nuclear Theory · Physics 2025-03-14 Xiang-Yu Wu , Lipei Du , Charles Gale , Sangyong Jeon

The production of low mass dileptons and soft photons from thermalized Quark Gluon Plasma (QGP) and hadronic matter in relativistic heavy ion collisions is evaluated. A boost invariant longitudinal and cylindrically symmetric transverse…

Nuclear Theory · Physics 2007-05-23 Pradip K. Roy

The production of low mass dileptons and soft photons from thermalized Quark Gluon Plasma (QGP) and hadronic matter in relativistic heavy ion collisions is evaluated. A boost invariant longitudinal and cylindrically symmetric transverse…

Nuclear Theory · Physics 2016-09-08 Dipali Pal , Pradip Kumar Roy , Sourav Sarkar , Dinesh Kumar Srivastava , Bikash Sinha

We present a first calculation of the dilepton yield and elliptic flow done with 3+1D viscous hydrodynamical simulations of relativistic heavy ion collisions at the top RHIC energy. A comparison with recent experimental data from the STAR…

High Energy Physics - Phenomenology · Physics 2015-06-12 G. Vujanovic , C. Young , B. Schenke , S. Jeon , R. Rapp , C. Gale

We study thermal dilepton production and anisotropic flow in Pb+Pb collisions at $\sqrt{s_{NN}} = 5.02 \, \mathrm{TeV}$ using next-to-leading-order (NLO) thermal QCD dilepton emission rates. A hybrid model (IP-Glasma+\kompost+MUSIC+UrQMD)…

Nuclear Theory · Physics 2025-05-01 Xiang-Yu Wu , Lipei Du , Charles Gale , Sangyong Jeon

We investigate the properties of the QCD matter across the deconfinement phase transition in the scope of the parton-hadron string dynamics (PHSD) transport approach. We present here in particular the results on the electromagnetic…

Nuclear Theory · Physics 2014-09-16 E. L. Bratkovskaya , O. Linnyk , W. Cassing

Radiation of dileptons and photons from high energy nuclear collisions provides information on the space-time evolution of the hot dense matter produced therein. We compute this radiation using relativistic hydrodynamics and a…

Nuclear Theory · Physics 2009-11-07 P. Huovinen , M. Belkacem , P. J. Ellis , J. I. Kapusta

Dilepton production in In+In collisions at 158 AGeV is studied within the microscopic parton-hadron-string dynamics (PHSD) transport approach that incorporates explicit partonic degrees-of-freedom, dynamical hadronization as well as the…

Nuclear Theory · Physics 2015-05-28 O. Linnyk , E. L. Bratkovskaya , V. Ozvenchuk , W. Cassing , C. M. Ko

The collective behavior of hadrons and of electromagnetic radiation in heavy-ion collisions has been widely used to study the properties of the the Quark-Gluon Plasma (QGP). Indeed this collectivity, as measured by anisotropic flow…

We use a Bayesian-calibrated multistage viscous hydrodynamic model to explore deuteron yield, mean transverse momentum and flow observables in LHC Pb-Pb collisions. We explore theoretical uncertainty in the production of deuterons,…

We present a unified description of the vector meson and dilepton production in elementary and in heavy ion reactions. The production of vector mesons ($\rho,\omega,\phi$) is described via the excitation of nucleon resonances ($R$). The…

Nuclear Theory · Physics 2015-06-26 Christian Fuchs , Amand Faessler

The in-medium spectral functions of $\rho$ and $\omega$ mesons and the broadening of the nucleon resonances at finite baryon density are calculated self-consistently by combining a resonance dominance model for the vector meson production…

Nuclear Theory · Physics 2008-11-26 E. Santini , M. D. Cozma , Amand Faessler , C. Fuchs , M. I. Krivoruchenko , B. Martemyanov

Dileptons serve as a clean and penetrating probe of the Quark--Gluon Plasma created in high-energy heavy-ion collisions. In this work, we investigate thermal dilepton spectra and their elliptic flow through the dynamical conductivity that…

Nuclear Theory · Physics 2025-08-26 Ashutosh Dwibedi , Ankit Kumar Panda , Sabyasachi Ghosh , Victor Roy