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物理学
Mixing of X and Y states from QCD sum rules analysis
We study ■ and ■ states as mixed states in QCD sum rules.By calculating the two-point correlation functions of pure states of their corresponding currents,we review the mass and coupling constant predictions of J~(PC)=1~(++),1~(--),and 1~(-+) states.By calculating the two-point mixed correlation functions of ■ and ■ currents,we estimate the mass and coupling constants of the corresponding "physical state" that couples to both ■ and ■ currents.Our results suggest that for 1~(++) states,the ■ and ■ components are more likely to mix,while for 1~(--) and 1~(-+) states,there is less mixing between ■ and ■.Our results suggest the Y series of states have more complicated components.
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Chinese Physics C
2022年06期
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