多奇异性原子核

Multi-strange Nucleus

原子核只能由无奇异性（奇异量子数Ｓ＝０）的核子组成吗？近来的理论预言指出，除了已知的Ｓ＝－１和Ｓ＝－２的超核外，还有可能存在Ｓ≤－３的多奇异性原子核，它们或者是由Ａ个重子（核子和超子）构成的弱束缚多体系统，或者是由禁闭在一个“口袋”里的３Ａ个夸克（ｕ、ｄ、ｓ夸克）构成的束缚较强的多体系统．实验研究者们正在计划或已经开始寻找这些系统．

Can nucleus consists only of nonstrange nucleons(strangeness quantum number S=0)?Recent theoretical investigations suggest that in addition to known hypernuclei with S=-1,-2,there is exsiting possibility to produce multistrange nuclear systems with S≤-3,which may be conventional bound sysytems made up of A baryons ( nucleons and hyperons) or more deeply bound manybody systems consisting of 3 A quarks(u,d,s quarks) which are confined in a“bag”.These systems are underway or planned experimentaly.