Momentum dependent mean-fields of (anti)hyperons

Abstract

We investigate the in-medium properties of hyperons and anti-hyperons in the framework of the Non-Linear Derivative (NLD) model. We focus on the momentum dependence of in-medium strangeness optical potentials. The NLD model is based on the simplicity of the well-established Relativistic Mean-Field (RMF) approximation, but it incorporates an explicit momentum dependence on a field-theoretical level. The extension of the NLD model to the (anti)baryon-octet is formulated in the spirit of SU(6) and G-parity arguments. It is shown that with an appropriate choice of momentum cut-offs the $\Lambda$, $\Sigma$ and $\Xi$ optical potentials are consistent with recent studies of the chiral effective field theory and Lattice-QCD calculations over a wide momentum region. In addition, we present NLD predictions for the in-medium momentum dependence of $\overline{\Lambda }$-, $\overline{\Sigma }$- and $\overline{\Xi }$-hyperons. This work is important for future experimental studies such as CBM, PANDA at the Facility for Antiproton and Ion Research (FAIR). It is relevant for nuclear astrophysics too.

arXiv comment18 pages, 8 figures, accepted for publication in Nuclear Physics A

References in corpus (22)

• Shapiro delay measurement of a two solar mass neutron star
• A Massive Pulsar in a Compact Relativistic Binary
• Relativistic Shapiro delay measurements of an extremely massive millisecond pulsar
• Hyperon-rich Matter in Neutron Stars
• Constraints on the high-density nuclear equation of state from the phenomenology of compact stars and heavy-ion collisions
• Kaon production in heavy ion reactions at intermediate energies
• Peering into the dark side: magnesium lines establish a massive neutron star in PSR J2215+5135
• Do hyperons exist in the interior of neutron stars ?
• Neutron Star Masses and Radii from Quiescent Low-Mass X-ray Binaries
• Strangeness Production close to Threshold in Proton-Nucleus and Heavy-Ion Collisions
• The Juelich hyperon-nucleon model revisited
• (No) neutron star maximum mass constraint from hypernuclei
• Hyperon-nucleon interaction within chiral effective field theory revisited
• Relativistic parameterizations of neutron matter and implications for neutron stars
• Lambda-nuclear interactions and hyperon puzzle in neutron stars
• Interplay between the symmetry energy and the strangeness content of neutron stars
• Hyperons in nuclear matter from SU(3) chiral effective field theory
• Twin stars and the stiffness of the nuclear equation of state: ruling out strong phase transitions below $1.7n_0$ with the new NICER radius measurements
• Hyperon-nuclear interactions from SU(3) chiral effective field theory
• Momentum dependent mean-field dynamics of compressed nuclear matter and neutron stars
• Antiproton-nucleus collisions simulation within a kinetic approach with relativistic mean fields
• Toward relativistic mean-field description of $\bar{\text{N}}$-nucleus reactions

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• Momentum dependence of near-threshold photoproduction of ${\Xi }^{-}$ hyperons off nuclei and their properties in the nuclear medium
• Deciphering ${\Xi }^{-}$ capture events in light emulsion nuclei