as a Feshbach resonance in the Skyrme model

スキルム模型におけるフェッシュバッハ共鳴としての

江添 貴之*; 保坂 淳

Ezoe, Takashi*; Hosaka, Atsushi

We describe the hyperon as a Feshbach resonance of a quasibound state coupled by a decaying channel of in the Skyrme model. A weakly bound state is generated in the laboratory frame, while the Sigma hyperon as a strongly bound state of in the intrinsic frame. We obtain a coupling of and channels by computing a baryon matrix element of the axial current. This coupling enables the decay of the bound state to . It is shown that the Skyrme model supports the as a narrow Feshbach resonance.