$\eta$ mesons in hot magnetized nuclear matter

TL;DR

This paper investigates how hot, magnetized, asymmetric nuclear matter affects the properties of $ta$ mesons using chiral models and perturbation theory, revealing significant magnetic field effects on meson mass and potential.

Contribution

It combines chiral SU(3) model and chiral perturbation theory to evaluate in-medium $ta$ meson properties under magnetic fields, providing a more comprehensive analysis.

Findings

Magnetic field significantly affects $ta$ meson mass and optical potential.

Deeper mass-shift observed in combined ChPT and chiral model approach.

No additional mass-shift due to uncharged nature of $ta$ mesons in magnetic field.

Abstract

The $\eta N$ interactions are investigated in the hot magnetized asymmetric nuclear matter using chiral SU(3) model and chiral perturbation theory (ChPT). In the chiral model, the in-medium properties of $\eta$-meson are calculated by the medium modified scalar densities under the influence of an external magnetic field. Further, in the combined approach of chiral model and ChPT, off-shell contributions of $\eta N$ interactions are evaluated from the ChPT effective $\eta N$ Lagrangian, and the in-medium effect of scalar densities are incorporated from the chiral SU(3) model. We observe a significant effect of magnetic field on the in-medium mass and optical potential of $\eta$ meson. We observe a deeper mass-shift in the combined approach of ChPT and chiral model compared to the effect of solo chiral SU(3) model. In both approaches, no additional mass-shift is observed due to the uncharged nature of $\eta$ mesons in the presence of magnetic field.