300 citations · 3.8k across the 107 of their papers we have counts for
5 papers · 1 filter
Theoretical Status of Pentaquarks
Takumi Doi
We review the current status of the theoretical pentaquark search from the direct QCD calculation. The works from the QCD sum rule and the lattice QCD in the literature are careful…
Tetraquark and Pentaquark Systems in Lattice QCD
F. Okiharu, T. Doi, H. Ichie +5
Motivated by the recent experimental discoveries of multi-quark candidates, e.g., the , we study multi-quark systems in lattice QCD. First, we perform accurate mass meas…
Meson-Baryon Couplings from QCD Sum Rules
Takumi Doi, Yoshihiko Kondo, Makoto Oka
Coupling constants of the pseudoscalar mesons to the octet baryons are calculated in the QCD sum rule approach. Two-point correlation function of the baryons are evaluated in a sin…
Penta-quark baryon from the QCD Sum Rule
Jun Sugiyama, Takumi Doi, Makoto Oka
Exotic penta-quark baryon with strangeness +1, Θ^+, is studied in the QCD sum rule approach. We derive sum rules for the positive and negative parity baryon states with J=1/2 and I…
The F/D Ratio and Meson-Baryon Couplings from QCD Sum Rules
Takumi Doi, Hungchong Kim, Yoshihiko Kondo +1
Coupling constants of the pseudoscalar mesons to the octet baryons are computed in the QCD sum rule approach. The pi-NN, eta-NN, pi-XiXi, eta-XiXi, pi-SigmaSigma, eta-SigmaSigma as…