https://doi.org/10.1051/epjconf/202430401007
A novel solution to the hyperon-puzzle in neutron stars
Department of Physics, Aristotle University of Thessaloniki, Greece
* Corresponding author: tgaitano@auth.gr
Published online: 8 October 2024
Hyperons are baryons with strangeness content and heavier than nucleons. Due to the high densities in the neutron star interior, they are energetically allowed to appear. The strangeness baryons can thus co-exist together with nucleons and leptons in β-equilibrium. However, as a generic feature, the neutron star equation of state softens largely when hyperons are present in neutron star matter. This is the so-called hyperon-puzzle: many state-of-the-art nuclear models cannot describe the precise observations of neutron star masses, when hyperons are included in their descriptions. We propose a new solution to this persisting hyperon-puzzle issue. It is based on the explicit momentum dependence of the hyperon potentials. They modify the strangeness thresholds and forbid or strongly suppress their population in neutron stars.
© The Authors, published by EDP Sciences, 2024
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