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Charmonium production and suppression in In+In and Pb+Pb reactions at SPS energies is investigated with the HSD transport approach within the 'hadronic comover model' as well as the 'QGP threshold scenario'. The results of the transport…

Nuclear Theory · Physics 2008-11-26 O. Linnyk , E. L. Bratkovskaya , W. Cassing , H. Stoecker

The formation and suppression dynamics of J/Psi, Chi_c and Psi-Prime mesons is studied within the HSD transport approach for Au+Au reactions at the top RHIC energy of sqrt(S)=200 GeV. Two prominent models, which have been discussed for more…

Nuclear Theory · Physics 2008-11-26 O. Linnyk , E. L. Bratkovskaya , W. Cassing , H. Stoecker

Charmonium production and suppression in heavy-ion collisions at relativistic energies is investigated within different models, i.e. the comover absorption model, the threshold suppression model, the statistical coalescence model and the…

Nuclear Theory · Physics 2009-11-10 E. L. Bratkovskaya , A. P. Kostyuk , W. Cassing , H. Stoecker

Applying the HSD transport approach to charmonium dynamics within the 'hadronic comover model' and the 'QGP melting scenario', we show that the suppression pattern seen at RHIC cannot be explained by the interaction with baryons, comoving…

Nuclear Theory · Physics 2008-11-26 O. Linnyk , E. L. Bratkovskaya , W. Cassing , H. Stoecker

We review the collectivity and the suppression pattern of charmed mesons - produced in proton-nucleus and nucleus-nucleus collisions at SPS (158 AGeV) and RHIC energies (21 ATeV) - in comparison to dynamical and thermal models. In…

Nuclear Theory · Physics 2008-11-26 O. Linnyk , E. L. Bratkovskaya , W. Cassing

The production of charmonium in heavy-ion collisions is investigated based on Boltzmann-type transport model for charmonium evolution and langevin equation for charm quark evolution. Charmonium suppression and regeneration in both…

High Energy Physics - Phenomenology · Physics 2016-05-04 Baoyi Chen

We study the charmonium suppression in different evolutions of quark gluon plasma (QGP) based on the transport model. In the colliding energies of Large Hadron Collider, charmonium final yields are dominated by the recombination of charm…

Nuclear Theory · Physics 2018-07-24 Li Guansong , Li Yuhuan , Shi Wei

In the framework of a model based on nuclear absorption plus comover interaction, we compute the $E_{T}$ distribution of the $J/\psi$ in $PbPb$ collisions at SPS and compare it with available NA50 data. Our analysis suggests that the…

High Energy Physics - Phenomenology · Physics 2008-11-26 N. Armesto , A. Capella , E. G. Ferreiro

Charmonium production from the hadron gas formed in ultra-relativistic heavy-ion collisions is studied. Using the $J/\psi$-hadron absorption cross section determined from the nonperturbative quark-exchange model, which has a peak value…

Nuclear Theory · Physics 2009-10-31 C. M. Ko , X. N. Wang , X. F. Zhang

The NA38 and NA50 experiments at the CERN SPS have measured charmonium production in different colliding systems with the aim of observing a phase transition from ordinary hadronic matter towards a state in which quarks and gluons are…

High Energy Physics - Experiment · Physics 2012-08-27 NA50 collaboration

We investigate $J/\psi$ suppression in ultrarelativistic heavy ion collisions within a generalized GLAUBER model and compare results of a hadronic comover scenario with those of a quark plasma scenario where conditions for MOTT dissociation…

High Energy Physics - Phenomenology · Physics 2007-05-23 K. Martins , D. Blaschke

Within the Hadron-String Dynamics (HSD) transport approach we study the suppression pattern of charmonia at RHIC with respect to centrality and rapidity employing various model concepts such as variants of the 'comover absorption' model or…

Nuclear Theory · Physics 2008-11-26 O. Linnyk , E. L. Bratkovskaya , W. Cassing

Within a hadron-string dynamical transport approach (HSD) we investigate the attenuation of high transverse momentum ($\pT$) hadrons as well as the suppression of 'near-side' and 'far-side' jets in $Au+Au$ collisions at invariant energies…

High Energy Physics - Phenomenology · Physics 2009-11-10 K. Gallmeister , W. Cassing

Charmonium production and absorption in heavy ion collisions is studied with the Ultrarelativisitic Quantum Molecular Dynamics model. We compare the scenario of universal and time independent color-octet dissociation cross sections with one…

High Energy Physics - Phenomenology · Physics 2009-10-31 C. Spieles , R. Vogt , L. Gerland , S. A. Bass , M. Bleicher , H. Stoecker , W. Greiner

Charmonium states are expected to be considerably suppressed in the case of quark-gluon plasma formation in high-energy heavy-ion collisions. However, a robust identification of suppression patterns as signatures of a deconfined QCD medium…

High Energy Physics - Phenomenology · Physics 2009-04-29 Carlos Lourenco , Ramona Vogt , Hermine K. Woehri

Charmonium production at heavy-ion colliders is considered within the comovers interaction model. The formalism is extended by including possible secondary J/psi production through recombination and an estimate of recombination effects is…

High Energy Physics - Phenomenology · Physics 2008-12-18 A. Capella , L. Bravina , E. G. Ferreiro , A. B. Kaidalov , K. Tywoniuk , E. Zabrodin

We study J/psi suppression in AB collisions assuming that the charmonium states evolve from small, color transparent configurations. Their interaction with nucleons and nonequilibrated, secondary hadrons is simulated using the microscopic…

High Energy Physics - Phenomenology · Physics 2007-05-23 C. Spieles , R. Vogt , L. Gerland , S. A. Bass , M. Bleicher , L. Frankfurt , M. Strikman , H. Stoecker , W. Greiner

Using A Multi-Phase Transport (AMPT) model, we study J/psi production from interactions between charm and anti-charm quarks in initial parton phase and between D and Dbar mesons in final hadron phase of relativistic heavy ion collisions at…

Nuclear Theory · Physics 2009-11-07 Bin Zhang , C. M. Ko , Bao-An Li , Zi-Wei Lin , Subrata Pal

We calculate open charm and charmonium production in $Au+Au$ reactions at $\sqrt{s}$ = 200 GeV within the hadron-string dynamics (HSD) transport approach employing open charm cross sections from $pN$ and $\pi N$ reactions that are fitted to…

Nuclear Theory · Physics 2009-11-10 E. L. Bratkovskaya , W. Cassing , H. Stoecker

We investigate hadron production and attenuation of hadrons with strange and charm quarks (or antiquarks) as well as high transverse momentum hadrons in relativistic nucleus-nucleus collisions from 2 AGeV to 21.3 ATeV within two independent…

Nuclear Theory · Physics 2015-06-26 W. Cassing , K. Gallmeister , E. L. Bratkovskaya , C. Greiner , H. Stöcker
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