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

L. Maiani·F. Piccinini·A. D. Polosa·V. Riquer
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Abstract

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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L. Maiani, F. Piccinini, A. D. Polosa, V. Riquer. 2006-09-25. Positive Parity Scalar Mesons in the 1-2 GeV Mass Range. https://doi.org/10.1140/epjc%2Fs10052-007-0219-5

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