$\phi$ meson properties in dense resonance matter at finite temperature

TL;DR

This paper investigates how the properties of the $$ meson, specifically its mass and decay width, are affected by hot, dense, and asymmetric nuclear matter, using an effective Lagrangian approach including resonance baryons.

Contribution

It introduces a comprehensive model that accounts for resonance baryons and finite temperature effects to study $$ meson modifications in dense matter, extending previous analyses.

Findings

Resonance baryons significantly alter $$ meson properties in medium.

Finite temperature effects influence the effective mass and decay width of $$ mesons.

The results are relevant for interpreting heavy-ion collision experiments.

Abstract

The effective mass and decay width of the $\phi$ meson in the isospin asymmetric hot and dense resonance matter are studied using the effective Lagrangian framework considering the $\phi K \bar K $ interactions at one-loop level. In addition to spin$-1/2$ octet baryons, we consider the effect of resonances $\Delta^{++,+,0,-}, \Sigma^{*\pm,0},\Xi^{*0,-}, \Omega^{-}$, on the properties of $\phi$ meson. The in-medium effects on the $\phi$ meson properties are simulated through the effective masses of kaons and antikaons computed using the chiral SU(3) hadronic mean field model in the presence of resonance baryons. The loop integral appearing in the computation of $\phi$ meson self energies is regularized using the dipole form factor with a cutoff parameter. The presence of resonance baryons within the medium at finite temperature is observed to significantly modify the effective mass and decay width of $\phi$ mesons. Examining the $\phi$ meson masses and decay width within a dense medium is anticipated to be essential for understanding experimental results from heavy-ion collision experiments.