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CHEN Hua-xing, A. Hosaka, ZHU Shi-lin. QCD Sum Rule Study of π1s States[J]. Nuclear Physics Review, 2009, 26(S1): 129-132. DOI: 10.11804/NuclPhysRev.26.S1.129
Citation: CHEN Hua-xing, A. Hosaka, ZHU Shi-lin. QCD Sum Rule Study of π1s States[J]. Nuclear Physics Review, 2009, 26(S1): 129-132. DOI: 10.11804/NuclPhysRev.26.S1.129
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QCD Sum Rule Study of π1s States

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  • We study the states π1(1600) and π1(2015) in the QCD sum rule. We classify the tetraquark currents of the quantum numbers IGJPC=1-1-+, and find that the flavor structure (3  6 )(6  3 ) is preferred when using a diquarkantidiquark construction. By using both the SVZ and finite energy sum rules, we obtain a mass around 1.6 and 2.0 GeV, for the states with the quark contents qq and qs , respectively. We also study their decay patterns.
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