Strangeness production in the HSD transport approach from SIS to SPS energies

Geiss, J.; Cassing, W.; Greiner, Carsten

doi:10.1016/s0375-9474(98)80011-0

Cited by 124 publications

(167 citation statements)

References 85 publications

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“…We employ the HSD transport model [38,44,45] for our study of p+A, d+A and A+A collisions. This approach takes into account the formation and multiple rescattering of formed hadrons as well as unformed 'leading' pre-hadrons and thus incorporates the dominant final state interactions.…”

Section: Ingredients Of the Transport Modelmentioning

confidence: 99%

Jet quenching by (pre-)hadronic final state interactions at RHIC

Gallmeister

Cassing

2005

Nuclear Physics A

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Within a hadron-string dynamical transport approach (HSD) we investigate the attenuation of high transverse momentum (p ⊥ ) hadrons as well as the suppression of 'near-side' and 'far-side' jets in Au + Au collisions at invariant energies √ s = 200 GeV and √ s = 62.4 GeV in comparison to the data available from the Relativistic Heavy-Ion Collider (RHIC). From our transport studies we find that a significant part of the high p ⊥ hadron attenuation seen experimentally can be attributed to inelastic interactions of 'leading' pre-hadrons with the dense hadronic environment. In addition, we also show results of 'near-side' and 'far-side' angular correlations of high p ⊥ particles from Au+Au collisions at √ s = 200 GeV and √ s = 62.4 GeV within this (pre-)hadronic attenuation scenario. It turns out that the 'near-side' correlations are unaltered -in accordance with experiment -whereas the 'far-side' correlations are suppressed by up to ∼ 60% in central collisions. Since a much larger suppression is observed experimentally for these reactions in central reactions we conclude that there should be strong additional (and earlier) partonic interactions in the dense and possibly colored medium created in Au+Au collisions at RHIC.

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Section: Ingredients Of the Transport Modelmentioning

confidence: 99%

Jet quenching by (pre-)hadronic final state interactions at RHIC

Gallmeister

Cassing

2005

Nuclear Physics A

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“…The high energy collisions -above √ s = 2.6 GeV for baryon-baryon collisions and √ s = 2.2 GeV for meson-baryon collisions -are described by the LUND string fragmentation model FRITIOF [39]. This aspect is similar to that used in the HSD approach [40,20,41,42] and the UrQMD model [43].…”

Section: Resonance Approachmentioning

confidence: 99%

Perspectives of production in , and Be reactions at SIS energies

2001

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We study dilepton production from pp, pd and pBe collisions from 1 -5 GeV including the π 0 , η, ω and ∆ Dalitz decays, direct decays of vector mesons (ρ, ω) as well as subthreshold ρ production via baryonic resonances (e.g. D 13 (1520), P 11 (1710)). Our calculations compare rather well with the pp and pd data from the DLS Collaboration, however, overestimate slightly the 'old' pBe data from that group. Futhermore, detailed predictions for differential dilepton spectra at SIS energies are made with a high mass resolution that can be controlled experimentally by the HADES Collaboration in near future.

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“…In our studies we use two independent transport models that employ hadronic and string degrees of freedom, i.e., UrQMD (v. 1.3) [12,13] and HSD [14,15]. They take into account the formation and multiple rescattering of hadrons and thus dynamically describe the generation of pressure in the hadronic expansion phase.…”

Section: Introductionmentioning

confidence: 99%

Review of QGP Signatures — Ideas Versus Observables

Bratkovskaya

Bleicher

Dumitru

et al. 2004

Structure and Dynamics of Elementary Matter

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We investigate hadron production and transverse hadron spectra in nucleus-nucleus collisions from 2 A·GeV to 21.3 A·TeV within two independent transport approaches (UrQMD and HSD) based on quark, diquark, string and hadronic degrees of freedom. The enhancement of pion production in central Au+Au (Pb+Pb) collisions relative to scaled pp collisions (the 'kink') is described well by both approaches without involving a phase transition. However, the maximum in the K + /π + ratio at 20 to 30 A·GeV (the 'horn') is missed by ∼ 40%. Also, at energies above ∼ 5 A·GeV, the measured K ± mT -spectra have a larger inverse slope than expected from the models. Thus the pressure generated by hadronic interactions in the transport models at high energies is too low. This finding suggests that the additional pressure -as expected from lattice QCD at finite quark chemical potential and temperature -might be generated by strong interactions in the early pre-hadronic/partonic phase of central heavy-ion collisions. Finally, we discuss the emergence of density perturbations in a first-order phase transition and why they might affect relative hadron multiplicities, collective flow, and hadron mean-free paths at decoupling. A minimum in the collective flow v2 excitation function was discovered experimentally at 40 A·GeV -such a behavior has been predicted long ago as signature for a first order phase transition.

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Strangeness production in the HSD transport approach from SIS to SPS energies

Cited by 124 publications

References 85 publications

Jet quenching by (pre-)hadronic final state interactions at RHIC

Jet quenching by (pre-)hadronic final state interactions at RHIC

Perspectives of production in , and Be reactions at SIS energies

Review of QGP Signatures — Ideas Versus Observables

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