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Hiyama, Emiko; Hosaka, Atsushi; Oka, Makoto; Richard, J.-M.*
Physical Review C, 98(4), p.045208_1 - 045208_8, 2018/10
Times Cited Count:43 Percentile:95.36(Physics, Nuclear)A quark model, which reproduces the ground-state mesons and baryons, i.e., the threshold energies, is applied to the configurations, where
is a light quark and
the charmed quark. In the calculation, several open channels are explicitly included such as
,
,
, etc. To distinguish genuine resonances and estimate their width, we employ Gaussian Expansion Method supplemented by the real scalingmethod (stabilization). No resonance is found at the energies of the
and
pentaquarks. On the other hand, there is a sharp resonant state at 4690 MeV with
state and another one at 4920 MeV with
state, which have a compact structure.