2006/04/30 by L. Maiani, F. Piccinini, A. D. Polosa +2 · 2 citations
Physics and Astronomy · #Nuclear physics research studies #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1140/epjc/s10052-007-0219-5
published as Eur.Phys.J.C50:609-616,2007 · 12 pages, 9 figures. Extended version. References added. Results and conclusions unchanged
arxiv created 2006/09/25 · openalex publication_date 2007/02/06 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Based on the observation that K0(1430) is lighter than its SU3 counterpart, a0(1450), we examine the possibility that these particles, together with f0(1370), f0(1500) and f0(1710), fill a tetraquark recurrence of the sub-GeV 0++ nonet mixed with a glueball state. We find the picture to be consistent with the known data about the three f0 resonances, more than the q-qbar hypothesis. Conventional spin-orbit coupling suggests the q-qbar, P-wave, nonet to lie around 1200 MeV. We review possible experimental indications of a scalar isovector resonance at 1.29 GeV, first observed by OBELIX in p-pbar annihilation.