Hadron production in ultra-relativistic nuclear collisions: Quarkyonic matter and a triple point in the phase diagram of QCD

By A. Andronic, David B. Blaschke, P. Braun-Munzinger, J. Cleymans, Kenji Fukushima, Larry McLerran, H. Oeschler, R. Pisarski, K. Redlich, C. Sasaki and 2 more. 2009

190 citations recorded by the source corpus.

We argue that features of hadron production in relativistic nuclear collisions, mainly at CERN-SPS energies, may be explained by the existence of three forms of matter: Hadronic Matter, Quarkyonic Matter, and a Quark-Gluon Plasma. We suggest that these meet at a triple point in the QCD phase diagram. Some of the features explained, both qualitatively and semi-quantitatively, include the curve for the decoupling of chemical equilibrium, along with the non-monotonic behavior of strange particle multiplicity ratios at center of mass energies near 10 GeV. If the transition(s) between the three phases are merely crossover(s), the triple point is only approximate.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/03a5dba874e570aee476d3ae837c1c5cb92dbc17

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In Nuclear and High Energy Physics

1. P. Braun-Munzinger
2. J. Stachel
3. V. Koch
4. T. Schaefer
5. A. Andronic
6. K. Redlich
7. Kenji Fukushima
8. T. Hatsuda

Citations in the corpus

• The phase diagram of dense QCD (2010, background): “The meeting point of the three firstorder phase boundaries is the triple point whose remnant for finite Nc is indicated by point H in figure 2, as suggested in [59].”
• Decoding the phase structure of QCD via particle production at high energy (2017, background): “As argued in [50, 51] this limit is not necessarily connected to a phase transition.”
• Properties of hot and dense matter from relativistic heavy ion collisions (2015, background): “1 and 9, that of approximately constant T for small μB values, and that of the strong increase in T at low energy and large μB, may reflect the existence of a triple point in the QCD phase diagram [123], see Section 2.”