Heavy flavor hadrons in statistical hadronization of strangeness-rich QGP

Kuznetsova, Inga; Rafelski, Johann

doi:10.1140/epjc/s10052-007-0268-9

Cited by 103 publications

(132 citation statements)

References 35 publications

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“…We have also considered the resonance decay effects which are shown to be important for understanding the particle production ratios in pp collisions. Our simple estimate based on the thermal model as well as predictions of more sophisticated statistical models [42,43] show that resonance decays also plays a crucial role for heavy hadron production in heavy ion collisions. We have, therefore, included the contribution from resonances in estimating these ratios.…”

Section: Conclusion and Discussionmentioning

confidence: 92%

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Ratios of heavy baryons to heavy mesons in relativistic nucleus-nucleus collisions

et al. 2009

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Heavy baryon/meson ratios c /D 0 and b /B 0 in relativistic heavy ion collisions are studied in the quark coalescence model. For heavy baryons, we include production from coalescence of heavy quarks with free light quarks as well as with bounded light diquarks that might exist in the strongly coupled quark-gluon plasma produced in these collisions. Including the contribution from decays of heavy hadron resonances and also that due to fragmentation of heavy quarks that are left in the system after coalescence, the resulting c /D 0 and b /B 0 ratios in midrapidity (|y| 0.5) from central Au + Au collisions at √ s NN = 200 GeV are about a factor of five and ten, respectively, larger than those given by the thermal model, and about a factor of ten and twelve, respectively, larger than corresponding ratios in the PYTHIA model for pp collisions. These ratios are reduced by a factor of about 1.6 if there are no diquarks in the quark-gluon plasma. The transverse momentum dependence of the heavy baryon/meson ratios is found to be sensitive to the heavy quark mass, with the b /B 0 ratio being much flatter than the c /D 0 ratio. The latter peaks at the transverse momentum p T

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Section: Conclusion and Discussionmentioning

confidence: 92%

“…[42], which gives a charmed baryon to meson ratio (cqq)/(cq) 0.25. It is also consistent with the statistical model predictions of Ref.…”

Section: The Thermal Modelmentioning

confidence: 99%

Ratios of heavy baryons to heavy mesons in relativistic nucleus-nucleus collisions

et al. 2009

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“…Thus a QGP source will weigh in with ratio s/S 0.03 [217]. This is about factor 1.4 larger than one computes for hadron phase at the same T , and this factor describes the strangeness enhancement effect in abundance which was predicted to be that small, see ref.…”

Section: Lhc Shm Analysismentioning

confidence: 85%

Melting hadrons, boiling quarks

Rafelski

2015

Eur. Phys. J. A

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Abstract. In the context of the Hagedorn temperature half-centenary I describe our understanding of the hot phases of hadronic matter both below and above the Hagedorn temperature. The first part of the review addresses many frequently posed questions about properties of hadronic matter in different phases, phase transition and the exploration of quark-gluon plasma (QGP). The historical context of the discovery of QGP is shown and the role of strangeness and strange antibaryon signature of QGP illustrated. In the second part I discuss the corresponding theoretical ideas and show how experimental results can be used to describe the properties of QGP at hadronization. The material of this review is complemented by two early and unpublished reports containing the prediction of the different forms of hadron matter, and of the formation of QGP in relativistic heavy ion collisions, including the discussion of strangeness, and in particular strange antibaryon signature of QGP.

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“…One can show that the φ/K + ratio is mainly dependent on value of s/S and not on hadronization temperature (see appendix B2i [43]) when the strangeness conservation constraint is implemented. This effect is unique to φ and arises since m φ ≃ 2m K .…”

Section: Discussionmentioning

confidence: 99%

Strangeness chemical equilibration in a quark-gluon plasma

Letessier

Rafelski

2007

Phys. Rev. C

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We study, in the dynamically evolving QGP fireball formed in relativistic heavy ion collisions at RHIC and LHC, the growth of strangeness yield toward and beyond the chemical equilibrium. We account for the contribution of the direct strangeness production and evaluate the thermal-QCD strangeness production mechanisms. The specific yield of strangeness per entropy,s/S, is the primary target variable. We explore the effect of collision impact parameter, i.e., fireball size, on kinetic strangeness chemical equilibration in QGP. Insights gained in study the RHIC data with regard to the dynamics of the fireball are applied to the study strangeness production at the LHC. We use these results and consider the strange hadron relative particle yields at RHIC and LHC in a systematic fashion. We consider both the dependence on s/S and directly participant number dependence.

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Heavy flavor hadrons in statistical hadronization of strangeness-rich QGP

Cited by 103 publications

References 35 publications

Ratios of heavy baryons to heavy mesons in relativistic nucleus-nucleus collisions

Ratios of heavy baryons to heavy mesons in relativistic nucleus-nucleus collisions

Melting hadrons, boiling quarks

Strangeness chemical equilibration in a quark-gluon plasma

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