Low-lying resonances in the Skyrme model using the semi-classical approximation

Quantization around the chiral solitons of the Skyrme model is carried out in the weak-coupling regime, using the semi-classical approximation. K^π = 0⁺and K^π = 1^± multimeson states are explicitly constructed in the B = 1 topological sector. Phase-shift results show clear evidence of two odd-parity resonances in the K^π = 1^- channel around 715 and 1580 MeV excitation energy. This strongly suggests a multimeson scenario for the description of the low-lying odd-parity resonances of the nucleon and Δ(1232). No resonance was found in the K^π = 0⁺and 1⁺ channels.