QCD sum rule approach for the light scalar mesons as four-quark states

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dc.creatorBrito, Thiago V.
dc.creatorNavarra, Fernando S.
dc.creatorNielsen, Marina
dc.creatorBracco, Mirian E.
dc.date2004-11-17
dc.date.accessioned2026-07-07T10:29:19Z
dc.date.available2026-07-07T10:29:19Z
dc.descriptionWe study the two point-function for the scalar mesons $σ, κ, f_0(980)$ and $a_0(980)$ as diquak-antidiquark states. We also study the decays of these mesons into $ππ$, $Kπ$ and $K\bar{K}$. We found that the couplings are consistent with existing experimental data, pointing in favor of the four-quark structure for the light scalar mesons.
dc.description6 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0411233
dc.identifierhttp://arxiv.org/abs/hep-ph/0411233
dc.identifierPhys.Lett.B608:69-76,2005
dc.identifierdoi:10.1016/j.physletb.2005.01.008
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/177758
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleQCD sum rule approach for the light scalar mesons as four-quark states
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