Journal
PHYSICAL REVIEW D
Volume 106, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
Keywords
tetraquark state; QCD sum rules
Funding
- National Natural Science Foundation of China [12075019]
- Jiangsu Provincial Double-Innovation Program [JSS-CRC2021488]
- Fundamental Research Funds for the Central Universities
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In this study, the QCD sum rule method was applied to systematically investigate S- and P-wave fully-strange tetraquark states, suggesting that certain particles may be explained as different waveforms of tetraquark states.
We apply the QCD sum rule method to systematically study the S- and P-wave fully-strange tetraquark states within the diquark-antidiquark picture. We systematically construct their interpolating currents by explicitly adding the covariant derivative operator. Our results suggest that the f(0)(2100), X(2063), and f(2)(2010) may be explained as the S-wave ss (s) over bar(s) over bar tetraquark states with the quantum numbers J(PC) = 0(++), 1(+-) , and 2(++), respectively. Our results also suggest that both the X(2370) and X(2500) may be explained as the P-wave ss (s) over bar(s) over bar tetraquark states of J(PC )= 0 (-+) and both the phi(2170) and X(2400) may be explained as the P-wave ss (s) over bar(s) over bar tetraquark states of J(PC) = 1(--). The masses of the ss (s) over bar(s) over bar tetraquark states with the exotic quantum number J(PC) = 1(-+) are extracted from two non-correlated currents to be 2.45(-0.25)(+0.20) GeV and 2.49(-0.25)(+0.21) GeV.
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