Strangelets formation in high energy heavy-ion collisions

Abstract

The properties of phase diagram of strange quark matter in equilibrium with hadronic matter at finite temperature are studied, where the quark phase and hadron phase are treated by baryon density-dependent quark mass model and hadron resonance gas model with hard core repulsion factor, respectively. The thermodynamic conditions for the formation of metastable strange quark droplets ("strangelets") in relativistic nuclear collisions are discussed. We obtained a rich structure of the phase diagram at finite temperature, and study the dynamical trajectories of an expanding strange fireball. Our results indicate that the strangeness fraction fs, perturbation parameter C, and confinement parameter D have strong influence on the properties of phase diagram and the formation of strangelets. Consider the isentropic expansion process, we found that the initial entropy per baryon is less than or equal to 5, which gives a large probability for the formation of strangelets. Furthermore, a sufficiently large strangeness fraction fs and one-gluon-exchange interaction and sufficiently small confinement interaction create possibilities for the formation of strangelets. On the contrary, the fireball will always complete the hadronization process when fs=0 or C>=0 or D^{1/2}>=170 MeV.

References in corpus (25)

• Experimental and Theoretical Challenges in the Search for the Quark Gluon Plasma: The STAR Collaboration's Critical Assessment of the Evidence from RHIC Collisions
• Formation of dense partonic matter in relativistic nucleus-nucleus collisions at RHIC: Experimental evaluation by the PHENIX collaboration
• Quark Gluon Plasma an Color Glass Condensate at RHIC? The perspective from the BRAHMS experiment
• The PHOBOS Perspective on Discoveries at RHIC
• Fluctuations of conserved charges at finite temperature from lattice QCD
• Small, Dense Quark Stars from Perturbative QCD
• Phase diagram of hot QCD in an external magnetic field: possible splitting of deconfinement and chiral transitions
• The Equation of State of Deconfined Matter at Finite Chemical Potential in a Quasiparticle Description
• Solid Quark Stars?
• van der Waals Interactions in Hadron Resonance Gas: From Nuclear Matter to Lattice QCD
• Hadron-quark mixed phase in hyperon stars
• Thermodynamics, strange quark matter, and strange stars
• Anisotropic pressure in strange quark matter under the presence of a strong magnetic field
• Strange matter and strange stars in a thermodynamically self-consistent perturbation model with running coupling and running strange quark mass
• Exploring effects of magnetic field on the Hadron Resonance Gas
• Influence of vector interactions on the hadron-quark/gluon phase transition
• Van der Waals Excluded Volume Model for Lorentz Contracted Rigid Spheres
• Magnetized quark matter with a magnetic-field dependent coupling
• Can cold quark matter be solid?
• Cold Strangelets Formation with Finite Size Effects in High Energy Heavy-Ion Collisions
• Surface and curvature properties of charged strangelets in compact objects
• Effect of a magnetic field on the thermodynamic properties of a high-temperature hadron resonance gas with van der Waals interactions
• Can the age discrepancies of neutron stars be circumvented by an accretion-assisted torque?
• Strangelets at finite temperature in an equivparticle model
• Strange quark matter and proto-strange stars in an equivaparticle model