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Oral presentation

$$P_c$$ pentaquarks with pion exchange and quark core couplings

Yamaguchi, Yasuhiro

no journal, , 

The $$P_c$$ pentaquark, reported by LHCb, has attracted a lot of interest. We investigate the $$P_c$$ states as a meson-baryon molecule coupling to the compact $$uudcbar{c}$$ states. This coupling works as the short-range interaction in the molecule, while the $$pi$$ exchange potential is employed as the long-range interaction. We study masses and decay widths of the $$P_c$$ states and discuss the roles of the short-range and long-range interactions introduced in this model. We also apply this model to the strange hidden-charm pentaquark $$P_{cs}$$ reported by LHCb in 2020.

Oral presentation

Studying the $$phi$$ meson in nuclear matter in a transport approach

Gubler, P.

no journal, , 

Based on my recent research, I will explain about my numerical simulation of pA reactions (p: proton, A: nucleus), which are used to study the $$phi$$ meson in nuclear matter. I will particularly focus on the question of how the modification of the $$phi$$ meson spectral function in nuclear matter influences the experimentally observed di-lepton spectrum.

Oral presentation

Higher fully-charmed tetraquarks; Radial excitations and P-wave states

Wang, G.-J.*

no journal, , 

Radial excited states and P-wave excited states of the fully-charmed tetraquark spectrum was studied in the quark model. In the standard model settings, we find that several states may correspond to the observed X(6900) region. The possible quantum numbers are $$0^{++}$$, $$2^{++}$$, $$1^{+-}$$, and $$2^{-+}$$ states.

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