In this investigation, we calculate the in-medium mass of \(\phi \)  meson in hot and dense non-strange resonance matter using the effective Lagrangian framework for \(\phi \bar{K} K\) interactions at one-loop level. The mean-field effective approach is utilized within the chiral SU(3) hadronic model to incorporate medium modification of kaon-antikaon masses. We have considered nucleons (n, p) and delta baryons ( \(\varDelta ^{++},\varDelta ^{+},\varDelta ^{0}\) , and \(\varDelta ^{-}\) ) as the degree of freedom within the medium. To address the issue of ultraviolet divergence, we employ a dipole form factor to regulate the self-energy loop integral, and the impact of varying the cutoff mass within this form factor on the results is examined. At finite temperatures, the effective masses of \(\phi \) mesons undergo substantial modifications due to the presence of \(\varDelta \) resonance baryons within the medium.

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In-Medium Mass of  \(\phi \) Meson in Isospin Asymmetric Non-strange Resonance Matter

  • Manpreet Kaur,
  • Arvind Kumar

摘要

In this investigation, we calculate the in-medium mass of \(\phi \)  meson in hot and dense non-strange resonance matter using the effective Lagrangian framework for \(\phi \bar{K} K\) interactions at one-loop level. The mean-field effective approach is utilized within the chiral SU(3) hadronic model to incorporate medium modification of kaon-antikaon masses. We have considered nucleons (n, p) and delta baryons ( \(\varDelta ^{++},\varDelta ^{+},\varDelta ^{0}\) , and \(\varDelta ^{-}\) ) as the degree of freedom within the medium. To address the issue of ultraviolet divergence, we employ a dipole form factor to regulate the self-energy loop integral, and the impact of varying the cutoff mass within this form factor on the results is examined. At finite temperatures, the effective masses of \(\phi \) mesons undergo substantial modifications due to the presence of \(\varDelta \) resonance baryons within the medium.