Speaker
Ki-Hoon Hong
(Inha University)
Description
We investigate the mass spectrum and electromagnetic transitions of charmonia, emphasizing the instanton effects on them. The heavy-quark potential consists of the Coulomb-like potential from one-gluon exchange and the linear confining potential. We introduce the nonperturbative heavy-quark potential derived from the instanton vacuum. We also consider the screened confining potential, which better describes the electromagnetic decays of higher excited states. Using this improved heavy-quark potential, we compute the mass spectrum and electromagnetic decays of the charmonia and discuss the results.
Authors
Ki-Hoon Hong
(Inha University)
Hyun-Chul Kim
(Inha University)
Prof.
Ulugbek Yakhshiev
(Inha University)
