Mixings of 4-quark components in light non-singlet scalar mesons in QCD sum rules

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dc.creatorSugiyama, J.
dc.creatorNakamura, T.
dc.creatorIshii, N.
dc.creatorNishikawa, T.
dc.creatorOka, M.
dc.date2007-07-17
dc.date.accessioned2026-07-07T10:56:46Z
dc.date.available2026-07-07T10:56:46Z
dc.descriptionMixings of 4-quark components in the non-singlet scalar mesons are studied in the QCD sum rules. We propose a formulation to evaluate the cross correlators of q\bar q and qq\bar q \bar q operators and to define the mixings of different Fock states in the sum rule. It is applied to the non-singlet scalar mesons, a_0 and K_0^\ast. It is found that the 4-quark operators predict lower masses than the q\bar q operators and that the 4-quark states occupy about 70-90% of the lowest mass states.
dc.description8 pages, 9 figures
dc.identifierhttps://arxiv.org/abs/0707.2533
dc.identifierhttp://arxiv.org/abs/0707.2533
dc.identifierPhys.Rev.D76:114010,2007
dc.identifierdoi:10.1103/PhysRevD.76.114010
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/186523
dc.subjectHigh Energy Physics - Phenomenology
dc.titleMixings of 4-quark components in light non-singlet scalar mesons in QCD sum rules
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