A Theory of Scalar Mesons

Simple item page
dc.creatorHooft, G. 't
dc.creatorIsidori, G.
dc.creatorMaiani, L.
dc.creatorPolosa, A. D.
dc.creatorRiquer, V.
dc.date2008-01-15
dc.date2008-03-23
dc.date.accessioned2026-07-07T12:14:06Z
dc.date.available2026-07-07T12:14:06Z
dc.descriptionWe discuss the effect of the instanton induced, six-fermion effective Lagrangian on the decays of the lightest scalar mesons in the diquark--antidiquark picture. This addition allows for a remarkably good description of light scalar meson decays. The same effective Lagrangian produces a mixing of the lightest scalars with the positive parity q-qbar states. Comparing with previous work where the q-qbar mesons are identified with the nonet at 1200-1700 MeV, we find that the mixing required to fit the mass spectrum is in good agreement with the instanton coupling obtained from light scalar decays. A coherent picture of scalar mesons as a mixture of tetraquark states (dominating in the lightest mesons) and heavy q-qbar states (dominating in the heavier mesons) emerges.
dc.description10 pages, 2 figures. References added. Presentation improved. Unchanged in substance. To appear in Phys Lett B
dc.identifierhttps://arxiv.org/abs/0801.2288
dc.identifierhttp://arxiv.org/abs/0801.2288
dc.identifierPhys.Lett.B662:424-430,2008
dc.identifierdoi:10.1016/j.physletb.2008.03.036
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/211075
dc.subjectHigh Energy Physics - Phenomenology
dc.titleA Theory of Scalar Mesons
dc.typetext

Files

Collections

arXiv