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High Energy Physics - Phenomenology

arXiv:hep-ph/0204205 (hep-ph)
[Submitted on 17 Apr 2002 (v1), last revised 19 Jun 2002 (this version, v3)]

Title:Scalar mesons above and below 1 GeV

Authors:Frank E. Close (Oxford), Nils A. Tornqvist (Helsinki)
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Abstract: 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 bar 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 more complicated nature. Near the center they are 4 quark states of the Jaffe type in S-wave, with some (q bar q) in P-wave, but further out they rearrange in colour to two colourless (q bar q) pairs 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.
Comments: 34 pages in Latex, minor improvements in sec 6
Subjects: High Energy Physics - Phenomenology (hep-ph); Nuclear Theory (nucl-th)
Cite as: arXiv:hep-ph/0204205
  (or arXiv:hep-ph/0204205v3 for this version)
  https://doi.org/10.48550/arXiv.hep-ph/0204205
Journal reference: J.Phys.G28:R249-R267,2002
Related DOI: https://doi.org/10.1088/0954-3899/28/10/201

Submission history

From: Nils Tornqvist [view email]
[v1] Wed, 17 Apr 2002 14:55:12 UTC (28 KB)
[v2] Thu, 18 Apr 2002 13:10:36 UTC (28 KB)
[v3] Wed, 19 Jun 2002 09:18:18 UTC (28 KB)
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