Scalar mesons above and below 1 GeV

By F. Close, N. Tornqvist. 2002

301 citations recorded by the source corpus.

We show that two nonets and a glueball provide a consistent description of data on scalar mesons below 1.7 GeV. Above 1 GeV the states form a conventional q nonet mixed with the glueball of lattice QCD. Below 1 GeV the states also form a nonet, as implied by the attractive forces of QCD, but of a more complicated nature. Near the centre they are (qq)()3 in S-wave, with some q in P-wave, but further out they rearrange as (q)1(q)1 and finally as meson–meson states. A simple effective chiral model for such a system with two scalar nonets can be made involving two coupled linear sigma models. One of these could be looked upon as the Higgs sector of nonpertubative QCD.

Subfields: Condensed Matter Physics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/77e6c72c5f1cdbf867a218f5917b1510a29f96a4

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In Condensed Matter Physics

1. Xiang Liu
2. C. Meyer
3. V. Crede

In Nuclear and High Energy Physics

1. Xiang Liu
2. Hua-Xing Chen
3. Wei Chen
4. Shi-Lin Zhu
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Citations in the corpus

• The experimental status of glueballs (2008, background): “Data from DAPHNE [110,111] on φ→ ηπγ and φ→ ππγ favor these states to be four-quark (q(2)q̄(2)) states [197, 198].”
• The hidden-charm pentaquark and tetraquark states (2016, background): “The diquark [qq] here is a color anti-triplet member, similar to an anti-quark q̄ [20, 383, 384].”