χc0→B(B|-)MM衰变中的重子共振态(英文)

Baryon Resonance inχc0→BBMM Decays

基于SU(3)对称性研究了χc0的遍举多体衰变χc0→B(B|-)MM(B:重子,M:介子),通过同位旋耦合常数构造了χc0→B(B|-)→B(B|-)MM衰变的跃迁振幅．基于这些跃迁振幅,发现N*共振态对χc0→B(B|-)ππ的贡献相对较大,这个衰变道可以在实验上用来研究N*共振态．

The exclusive decays of xc0 into multi-body BB^-MM（B：baryon, M：meson） are investigated based on the SU（3） symmetry. The transitional amplitudes of xc0→BB^- → BB^-MM are given in terms of the isospin coupling constant. Based on these amplitudes, it is found that N^＊ resonances make a relatively large contribution to the xc0→ NN^-ππ, which might serve as a channel to study N^＊ resonance in data analysis.