QCD sum rule study on the fully strange tetraquark states of JPC=2++

被引:1
作者
Dong, Rui-Rui [1 ]
Su, Niu [1 ]
Chen, Hua-Xing [1 ]
Cui, Er-Liang [2 ]
机构
[1] Southeast Univ, Sch Phys, Nanjing, Peoples R China
[2] Northwest A&F Univ, Coll Sci, Yangling, Peoples R China
基金
中国国家自然科学基金;
关键词
exotic hadron; tetraquark state; QCD sum rules; Fierz rearrangement; interpolating current; QUARK CONDENSATE; PENTAQUARK;
D O I
10.3389/fphy.2023.1184103
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We apply the QCD sum rule method to systematically study the fully strange tetraquark states with the quantum number J(PC) = 2(++). We construct both the diquark-antidiquark and mesonic-mesonic currents and calculate both their diagonal and off-diagonal correlation functions. Based on the obtained results, we further construct three mixing currents that are nearly non-correlated. We use one mixing current to extract the mass of the lowest-lying state to be 2.03(+0.16) (-0.15) GeV, which can be used to explain f(2)(2010) as a fully strange tetraquark state of J(PC) = 2(++). This state was observed by BESIII in the phi phi channel, and we propose to confirm it in the eta((')) eta((')) channel.
引用
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页数:8
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