论文标题
放大QCD Sum-Rule方法中的多Quark Hadron
Zooming in on Multiquark Hadrons within QCD Sum-Rule Approaches
论文作者
论文摘要
通过QCD总规则来针对多Quark Hadron（例如Tetriquark，例如Tetriquarks，Tetriquarks，Pentaquarks，Hexaquarks）的描述，我们注意到，对两个或三点相关函数的全部贡献分别涉及两个或仅仅是单一的连续性，在两个或仅仅是单一的cluctiquartiquart的单一操作员中，都可以在两个点或三点相关函数中进行研究，以便在两个或仅仅是单一的运算师中，并且是在整个过程中进行的，这些函数是在整个过程中，这些函数都可以在实行范围内进行。由明确识别的成员定义。第一个是由所谓的多Quark-Phile贡献形成的，这些贡献确实可以支持多Quarks。在风味的四夸克中，根据四个（抗）夸克的定义，四夸克 - 丝状贡献必须表现出两个或多个适当的拓扑结构的gluon交换。第二个显然是与多Quarks没有任何关系的贡献。通过QCD和规则研究多Quarks时，必须丢弃这些这些。第一类仅应输入外来hadron的“多QUARK-eapequate” QCD和规则。
Aiming at self-consistent descriptions of multiquark hadrons (such as tetraquarks, pentaquarks, hexaquarks) by means of QCD sum rules, we note that the totality of contributions to two-point or three-point correlation functions that involve, respectively, either two or just a single operator capable of interpolating the particular multiquark under study can be straightforwardly disentangled into two disjoint classes defined by unambiguously identifiable members. The first is formed by so-called multiquark-phile contributions which indeed might support multiquarks. In the case of flavour-exotic tetraquarks, by definition composed of four (anti-) quarks of mutually different flavours, a tetraquark-phile contribution has to exhibit two or more gluon exchanges of appropriate topology. The second consists of contributions evidently not bearing any relation to multiquarks; these must be discarded when studying multiquarks by QCD sum rules. The first class only should enter the "multiquark-adequate" QCD sum rules for exotic hadrons.
