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The European Physical Journal C

, Volume 50, Issue 3, pp 609–616 | Cite as

Positive parity scalar mesons in the 1–2 GeV mass range

  • L. Maiani
  • F. Piccinini
  • A.D. PolosaEmail author
  • V. Riquer
Regular Article - Theoretical Physics

Abstract

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 qq̄ hypothesis. Conventional spin–orbit coupling suggests the qq̄, 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 pp̄ annihilation.

Keywords

Mass Matrix Mass Formula Scalar Meson Tetraquark State Particle Listing 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • L. Maiani
    • 1
  • F. Piccinini
    • 2
  • A.D. Polosa
    • 3
    Email author
  • V. Riquer
    • 3
  1. 1.Dip. FisicaUniversità di Roma “La Sapienza” and INFNRomaItaly
  2. 2.I.N.F.N. Sezione di Pavia and Dipartimento di Fisica Nucleare e TeoricaPaviaItaly
  3. 3.INFN, Sezione di Roma 1RomaItaly

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