利用分子态模型研究新近发现的Y(4260)粒子

The Application of Molecular State Model to Recently Discovered Particle Y(4260)

对新发现的Y(4260)粒子进行了初步研究,提出该粒子是cχ1和0ρ构造的分子态,并利用分子态模型解释了为什么Y(4260)→π+-πJ/ψ的衰变会比Y(4260)→DD的衰变率大许多,同时预言伴随Y(4260)存在2个同位旋三重态.

A preliminary research on recently discovered particle is carried out in this paper. It is suggest that the particle is the molecular state constructed by xc^1 and p^0;the molelular state model is applied to interpret the reason why the decay rate of Y（4260）→π^＋π＂-J/ψ is much larger than that of Y（4260）→DD. Meanwhile,it is predicted that there are two isospin triplet with Y（4260）.