Speaker
Takuya Sugiura
(RIKEN iTHEMS)
Description
Recently, LHCb collaboration has reported three resonance states in the J/\psi p invariant mass spectrum from a weak decay of \Lambda_b. The states, P_c(4312), P_c(4440) and P_c(4457), are expected to be pentaquarks with flavor structure of uudc\bar{c}. In this work, we analyze the J/\psi p scattering by lattice QCD at m_\pi=700, 570, 410 MeV. We determine the spin-dependent J/\psi p potentials, as well as the coupled-channel potentials of open-charm meson-baryon systems through the HAL QCD method.