Speaker
Description
We present the in-medium masses of the heavy quarkonium (charmonium and bottomonium) states in isospin asymmetric $\Delta$ resonance matter. We have considered nucleons ($n,p$) and delta baryons ($\Delta^{++},\Delta^{+},\Delta^{0}$, and $\Delta^{-}$) as the degree of freedom within the medium. The $J/\psi$ ($\Gamma$) self-energy is evaluated via the $D \bar D$ ($B \bar B$) meson loop, with medium effects incorporated through $D$ ($B$) meson masses computed using the chiral SU(3) hadronic mean field model.
The results are compared with previous studies conducted within nuclear matter and the presence of $\Delta$ resonance baryons in the medium leads to substantial modifications in the effective masses of $J/\psi$ ($\Gamma$) mesons at finite temperature. This may enhance the understanding of upcoming data from heavy-ion collision experiments associated with the FAIR project, such as CBM and PANDA.
