亚原子六夸克费米子的对称性
Symmetries in subatomic six-quark fermions
摘要：
四夸克介子和五夸克费米子系统存在的证据重新引起了人们对寻找其他多夸克系统的兴趣。我们探讨了在核介质中存在两个核子自旋-同位旋量子数的六夸克集团组态的可能性。如果利用所有的对称性，特别是轨道、色旋$SU(6)_{cs}$和同位旋SU（2），对这种团簇的研究是可行的。我们研究了这种团簇是否有助于由重中微子或其他外来粒子介导的无中微子双β衰变，因为在常规核物理中，由于核硬核的存在，相关的核矩阵元素被抑制。
英文摘要：
The evidence of the existence of tetra-quark meson and penta-quark fermion systems has revived interest in the hunt of other multi-quark systems. We explore the possibility of six-quark cluster configurations with the two nucleon spin-isospin quantum numbers existing in the nuclear medium. The investigation of such clusters is feasible if one exploits all the symmetries involved, in particular orbital, color-spin $SU(6)_{cs}$ and isospin SU(2). We investigate whether such clusters contribute to neutrinoless double-beta decay mediated by heavy neutrinos or other exotic particles, since in conventional nuclear physics the relevant nuclear matrix elements are suppressed due to the presence of the nuclear hard core.
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