Positive Parity Scalar Mesons in the 1-2 GeV Mass Range

Details Positive Parity Scalar Mesons in the 1-2 GeV Mass Range Positive Parity Scalar Mesons in the 1-2 GeV Mass Range

2006-04-03

arxiv.org/abs/hep-ph/0604018v2

Eur.Phys.J.C50:609-616,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 9 figures. Extended version. References added. Results and conclusions unchanged

Scientific paper

10.1140/epjc/s10052-007-0219-5

Based on the observation that K_0(1430) is lighter than its SU_3 counterpart, a_0(1450), we examine the possibility that these particles, together with f_0(1370), f_0(1500) and f_0(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 f_0 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.

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