Solution of the Hyperon Puzzle within a Relativistic Mean-Field Model

K. A. Maslov; E. E. Kolomeitsev; D. N. Voskresensky

doi:10.1016/j.physletb.2015.07.032

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arXiv · 1504.02915

Solution of the Hyperon Puzzle within a Relativistic Mean-Field Model

K. A. Maslov·E. E. Kolomeitsev·D. N. Voskresensky

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Abstract

The equation of state of cold baryonic matter is studied within a relativistic mean-field model with hadron masses and coupling constants depending on the scalar field. All hadron masses undergo a universal scaling, whereas the coupling constants are scaled differently. The appearance of hyperons in dense neutron star interiors is accounted for, however the equation of state remains sufficiently stiff if a reduction of the $ϕ$ meson mass is included. Our equation of state matches well the constraints known from analyses of the astrophysical data and the particle production in heavy-ion collisions.

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K. A. Maslov, E. E. Kolomeitsev, D. N. Voskresensky. 2015-07-24. Solution of the Hyperon Puzzle within a Relativistic Mean-Field Model. https://doi.org/10.1016/j.physletb.2015.07.032

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