8–10 Mar 2021
Yukawa Institute for Theoretical Physics, Kyoto University
Asia/Tokyo timezone

charmonium in nuclear matter and nuclei

10 Mar 2021, 09:30
20m
Panasonic hall (Yukawa Institute for Theoretical Physics, Kyoto University)

Panasonic hall

Yukawa Institute for Theoretical Physics, Kyoto University

Speaker

Javier Cobos-Martinez (Physics Department, University of Sonora, Mexico)

Description

Results for $\eta_c$- and $J/\Psi$-nucleus bound state energies for various nuclei are presented. These results are obtained using effective Lagrangians at the hadronic level. Essential input for the calculations, namely the medium-modified $D$ and $D^{*}$ meson masses, as well as the density distributions in nuclei, are calculated within the quark-meson coupling (QMC) model. The attractive potentials for the $\eta_c$ and $J/\Psi$ mesons in the nuclear medium originate, respectively, from the in-medium enhanced $DD^{*}$ and $D\bar{D}r$ loops in the $\eta_c$ and $J/\Psi$ self energies. Our results suggest that the $\eta_c$ and $J/\Psi$ mesons should form bound states with all the nuclei considered. Some of the results presented were recently published in J.J. Cobos-Martinez et al, Phys.Lett.B 811 (2020) 135882

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