Charmonium dynamics in Au+Au collisions at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msqrt><mml:mrow><mml:mi>s</mml:mi></mml:mrow></mml:msqrt><mml:mo>=</mml:mo><mml:mn>200</mml:mn></mml:mrow></mml:math>GeV

Linnyk, O.; Bratkovskaya, E.L.; Cassing, W.; Stöcker, H.

doi:10.1103/physrevc.76.041901

Cited by 25 publications

(75 citation statements)

References 35 publications

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“…Concluding, our procedure gives a reasonable description of data both at mid-and forward rapidity for different collision systems at RHIC, in contrast with the recent claim [44] that the CIM fails to reproduce forward rapidity data. We have shown that the situation is much improved by inclusion of a recombination term.…”

Section: Dissociation By Comovers Interaction and Recombinationmentioning

confidence: 72%

Charmonium dissociation and recombination at RHIC and LHC

et al. 2008

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Charmonium production at heavy-ion colliders is considered within the comovers interaction model. The formalism is extended by including possible secondary J/ψ production through recombination and an estimate of recombination effects is made with no free parameters involved. The comovers interaction model also includes a comprehensive treatment of initial-state nuclear effects, which are discussed in the context of such high energies. With these tools, the model properly describes the centrality and the rapidity dependence of experimental data at RHIC energy, √ s = 200 GeV, for both Au+Au and Cu+Cu collisions. Predictions for LHC, √ s = 5.5 TeV, are presented and the assumptions and extrapolations involved are discussed.

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Section: Dissociation By Comovers Interaction and Recombinationmentioning

confidence: 72%

Charmonium dissociation and recombination at RHIC and LHC

et al. 2008

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“…In extending our previous investigations, a few new developments have been incorporated apart from a readjustment of the two SHM parameters (T and V ) to LHC energies: i) an inclusion of bottom quarks and antiquarks as well as the corresponding bottom mesons and their leptonic decay modes, ii) an appropriate model for the energy loss of open charm mesons in central P b + P b collisions [47][48][49], and iii) a dynamical approach for the charmonium suppression and recreation in the partonic and hadronic phases [64,65] that supersedes the earlier studies within the HSD approach at lower energies [78]. With respect to the partonic channels for dilepton production in the PHSD no extensions had to be incorporated as well as with respect to the overall reaction dynamics of P b + P b collisions in the transport approach.…”

Section: Discussionmentioning

confidence: 99%

Dilepton production in proton-proton and Pb+Pb collisions atsNN=2.76TeV

et al. 2013

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We study e + e − pair production in proton-proton and central Pb+Pb collisions at √ sNN = 2.76 TeV within two models: an extended statistical hadronization model (SHM) and the PartonHadron-String Dynamics (PHSD) transport approach. We find that the PHSD calculations roughly agree with the dilepton spectrum from hadronic sources with the 'cocktail' estimates from the statistical hadronization model matched to available data at LHC energies. The dynamical simulations within the PHSD show a moderate increase of the low mass dilepton yield essentially due to the in-medium modification of the ρ-meson. Furthermore, pronounced traces of the partonic degrees of freedom are found in the PHSD results in the intermediate mass regime. The dilepton production from the strongly interacting quark-gluon plasma (sQGP) exceeds that from the semi-leptonic decays of open charm and bottom mesons. Additionally, we observe that a transverse momentum cut of 1 GeV/c further suppresses the relative contribution of the heavy meson decays to the dilepton yield, such that the sQGP radiation strongly dominates the spectrum for masses from 1 to 3 GeV, allowing a closer look at the electromagnetic emissivity of the partonic plasma in the early phase of Pb+Pb collisions.

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“…The failure of these 'standard' suppression models at RHIC has lead to the conclusion in Ref. 45 that the hadronic 'comover absorption and recombination' model is falsified by the PHENIX data and that strong interactions in the pre-hadronic (or partonic) phase is necessary in order to explain the large suppression at forward rapidities.…”

Section: )mentioning

confidence: 99%

“…45,82 ). Even when adding the cc formation time, this gives an energy density ∼ 5/0.18 ≈ 28 GeV/fm 3 .…”

Section: Rhic Energiesmentioning

confidence: 99%

Open and Hidden Charm in Proton–nucleus and Heavy-Ion Collisions

Linnyk

Bratkovskaya

Cassing

2008

Int. J. Mod. Phys. E

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We review the collectivity and the suppression pattern of charmed mesons -produced in proton-nucleus and nucleus-nucleus collisions at SPS (∼ 158 A·GeV) and RHIC energies (∼ 21 A·TeV) -in comparison to dynamical and thermal models. In particular, we examine the charmonium 'melting' and the 'comover dissociation' scenarios -implemented in a microscopic transport approach -in comparison to the available data from the SPS and RHIC. The analysis shows that the dynamics of c,c quarks at RHIC are dominated by partonic or 'pre-hadronic' interactions in the strongly coupled plasma stage and can neither be modeled by 'hadronic' interactions nor described appropriately by color screening alone. Both the 'charmonium melting' and the hadronic 'comover absorption and recreation model' are found, however, to be compatible with the experimental observation at SPS energies; the experimental ratio of Ψ ′ /J/Ψ versus centrality clearly favors the 'hadronic comover' scenario. We find that the collective flow of charm in the purely hadronic Hadron-String Dynamics (HSD) transport appears compatible with the data at SPS energies, but substantially underestimates the data at top RHIC energies. Thus, the large elliptic flow v 2 of D-mesons and the low R AA (p T ) of J/Ψ seen experimentally have to be attributed to early interactions of non-hadronic degrees of freedom. Simultaneously, we observe that non-hadronic interactions are mandatory in order to describe the narrowing of the J/Ψ rapidity distribution from pp to central Au + Au collisions at the top RHIC energy of √ s = 200 GeV. We demonstrate additionally that the strong quenching of high-p T J/Ψ's in central Au + Au collisions indicates that a large fraction of final J/Ψ mesons is created by a coalescence mechanism close to the phase boundary. Throughout this review we, furthermore, provide predictions for charm observables from Au+Au collisions at FAIR energies of 25 -35 A·GeV.

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Charmonium dynamics in Au+Au collisions ats=200GeV

Cited by 25 publications

References 35 publications

Charmonium dissociation and recombination at RHIC and LHC

Charmonium dissociation and recombination at RHIC and LHC

Dilepton production in proton-proton and Pb+Pb collisions atsNN=2.76TeV

Open and Hidden Charm in Proton–nucleus and Heavy-Ion Collisions

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