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Production and space-time evolution of heavy quarks in central and non-central heavy-ion collisions at RHIC and LHC are studied with the partonic transport model Boltzmann Approach of MultiParton Scatterings (BAMPS). In addition to the…

高能物理 - 唯象学 · 物理学 2011-04-05 Jan Uphoff , Oliver Fochler , Zhe Xu , Carsten Greiner

Heavy quark and charmonium production as well as their space-time evolution are studied in transport simulations of heavy-ion collisions at RHIC and LHC. In the partonic transport model Boltzmann Approach of MultiParton Scatterings (BAMPS)…

高能物理 - 唯象学 · 物理学 2015-03-19 Jan Uphoff , Kai Zhou , Oliver Fochler , Zhe Xu , Carsten Greiner

The production and space-time evolution of charm and bottom quarks in nucleus-nucleus collisions at RHIC and LHC are investigated with the partonic transport model BAMPS (Boltzmann Approach of MultiParton Scatterings). Heavy quarks,…

高能物理 - 唯象学 · 物理学 2013-05-29 Jan Uphoff , Oliver Fochler , Zhe Xu , Carsten Greiner

Production and elliptic flow of heavy quarks are investigated in nucleus-nucleus collisions at RHIC and LHC within the Boltzmann Approach of MultiParton Scatterings (BAMPS). The initial heavy quark yield is estimated with the leading order…

高能物理 - 唯象学 · 物理学 2014-11-20 Jan Uphoff , Oliver Fochler , Zhe Xu , Carsten Greiner

The space-time propagation of heavy quarks in ultra-relativistic heavy ion collisions is studied within the partonic transport model Boltzmann Approach of MultiParton Scatterings (BAMPS). In this model heavy quarks interact with the…

高能物理 - 唯象学 · 物理学 2011-08-25 Jan Uphoff , Oliver Fochler , Zhe Xu , Carsten Greiner

The partonic transport model BAMPS (a Boltzmann approach to multiparton scatterings) is employed to investigate different aspects of heavy ion collisions within a common framework based on perturbative QCD. This report focuses on the joint…

高能物理 - 唯象学 · 物理学 2014-11-20 Oliver Fochler , Zhe Xu , Carsten Greiner

In this work, the production of photons through binary scattering processes is investigated for equilibrated hadronic systems. More precisely, a non-equilibrium hadronic transport approach to describe relativistic heavy-ion collisions is…

Production, elliptic flow and the nuclear modification factor of charm and bottom quarks are studied in central and non-central heavy-ion collisions at RHIC and LHC using the partonic transport model Boltzmann Approach of MultiParton…

高能物理 - 唯象学 · 物理学 2011-02-11 Jan Uphoff , Oliver Fochler , Zhe Xu , Carsten Greiner

We calculate leading-order medium photon yields from a quark-gluon plasma using (3+1)-dimensional anisotropic hydrodynamics. Non-equilibrium corrections to the photon rate are taken into account using a self-consistent modification of the…

高能物理 - 唯象学 · 物理学 2016-03-09 Lusaka Bhattacharya , Radoslaw Ryblewski , Michael Strickland

We present fully dynamic simulations of heavy ion collisions at RHIC energies within the perturbative QCD-based partonic transport model BAMPS, focusing on the simultaneous investigation of jet-quenching and elliptic flow. The model…

高能物理 - 唯象学 · 物理学 2011-10-06 Oliver Fochler , Zhe Xu , Carsten Greiner

The photon emission from a non-equilibrium quark-gluon plasma (QGP) is analyzed. We derive an integral equation that describes photon production through quark-antiquark annihilation and quark bremsstrahlung. It includes coherence between…

核理论 · 物理学 2018-01-17 Sigtryggur Hauksson , Sangyong Jeon , Charles Gale

Photons produced in the pre-equilibrium/pre-hydro stage of the quark-gluon plasma produced in relativistic heavy-ion collisions were computed using parton distribution functions obtained from solutions of the Boltzmann equation. The effect…

高能物理 - 唯象学 · 物理学 2021-02-03 Jessica Churchill , Li Yan , Sangyong Jeon , Charles Gale

We calculate leading-order medium photon and dilepton yields from a quark-gluon plasma using (3+1)-dimensional anisotropic hydrodynamics. In the case of dileptons, at leading-order it is sufficient to take into account non-equilibrium…

高能物理 - 唯象学 · 物理学 2015-09-15 Lusaka Bhattacharya , Radoslaw Ryblewski , Michael Strickland

The emission of real photons from a momentum-anisotropic quark-gluon plasma (QGP) is affected by both the collective flow of the radiating medium and the modification of local rest frame emission rate due to the anisotropic momentum…

高能物理 - 唯象学 · 物理学 2020-07-29 Babak Salehi Kasmaei , Michael Strickland

We compute the photon emission rate from a quark-gluon plasma with an anisotropic particle momentum distribution induced by a non-vanishing local shear pressure tensor. Our calculation includes photon production through Compton scattering…

核理论 · 物理学 2015-06-23 Chun Shen , Jean-Francois Paquet , Ulrich Heinz , Charles Gale

We study the nonequilibrium photon production in the quark-hadron phase transition, using the Friedberg-Lee type solitons as a working model for quark-hadron physics. We propose that to search for nonequilibrium photons in the direct photon…

高能物理 - 唯象学 · 物理学 2009-10-31 Da-Shin Lee , Kin-Wang Ng

The full space-time evolution of gluons, light and heavy quarks in ultra-relativistic heavy-ion collisions is studied within the partonic transport model Boltzmann Approach to MultiParton Scatterings (BAMPS). We discuss for light and heavy…

高能物理 - 唯象学 · 物理学 2015-06-17 Jan Uphoff , Oliver Fochler , Zhe Xu , Carsten Greiner

We compute the hard photon production rate of a chemically non-equilibrated quark-gluon plasma. We assume that the plasma is already thermally equilibrated, i.~e. describable by a temperature, but with a phase-space distribution that…

高能物理 - 唯象学 · 物理学 2008-11-26 Christoph T. Traxler , Markus H. Thoma

The dynamics of partonic cascades may be an important aspect for particle production in relativistic collisions of nuclei at CERN SPS and BNL RHIC energies. Within the Parton-Cascade Model, we estimate the production of single photons from…

核理论 · 物理学 2008-11-26 Dinesh K. Srivastava , Klaus Geiger

In the early stage of ultrarelativistic heavy-ion collisions chiral symmetry is restored temporarily. During this so-called chiral phase transition, the quark masses change from their constituent to their bare values. This mass shift leads…

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