A QCD sum rule study of the light scalar mesons |
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| Authors: | Hee-Jung Lee |
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| Affiliation: | (1) Department of Science Education, Asia Pacific Center for Theoretical Physics, POSTECH, 790-784 Pohang, South Korea;(2) Chungbuk National University, 361-763 Cheongju Chungbuk, South Korea |
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| Abstract: | We examine the interpretation of the light scalar meson nonet as bound states of the scalar diquark and the scalar antidiquark using the QCD sum rule approach. Our results are obtained by means of the operator product expansion (OPE) including operators up to dimension 8. They show no evidence of the coupling of the tetraquark states to the light scalar meson nonet. |
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| Keywords: | 11.55.Hx Sum rules 12.38.Aw General properties of QCD (dynamics, confinement, etc.) 12.38.Lg Other nonperturbative calculations |
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