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arXiv · 2102.00192

$η$ mesons in hot magnetized nuclear matter

Rajesh Kumar·Arvind Kumar
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Abstract

The $ηN$ 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 $η$-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 $ηN$ interactions are evaluated from the ChPT effective $ηN$ 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 $η$ 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 $η$ mesons in the presence of magnetic field.

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Rajesh Kumar, Arvind Kumar. 2021-01-30. $η$ mesons in hot magnetized nuclear matter. https://doi.org/10.1088/1674-1137%2Fac3bc7

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