Study of d∗(2380) resonance in a chiral constituent quark model

Abstract

Studies on newly observed dibaryon resonance [Formula: see text] ([Formula: see text]) with a compact structure in recent years are reviewed. In terms of a dynamical calculation with a chiral constituent quark model by using Resonating Group Method, the general characteristics of this resonance, like its mass, binding energy, root-mean-square radius, as well as, its strong double pion decays of [Formula: see text] and [Formula: see text], its strong single pion decays of [Formula: see text], and its electromagnetic form factors, are given and compared with the experimental data. It is shown that the compact hexaquark dominant structure might be a reasonable interpretation for this dibaryon resonance and the charge distribution might be a new observable to judge different theoretical assumptions for its structure. Moreover, possible experimental tests are also discussed briefly.