New Look at Scalar Mesons

2004/07/31 by Luciano Maiani, L. Maiani, A. Polosa +3 · 14 citations
Physics and Astronomy · #Charm (quantum number) #Diquark #High-Energy Particle Collisions Research #Meson #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Pseudoscalar #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quantum number #Quark #Scalar (mathematics) #hep-ph

paper · pdf · doi:10.1103/physrevlett.93.212002

published as Phys.Rev.Lett.93:212002,2004 · 4 pages, 1 figure, misprints corrected, references added, accepted for publication in Phys. Rev. Lett

arxiv created 2004/10/05 · openalex publication_date 2004/11/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Light scalar mesons are found to fit rather well a diquark-antidiquark description. The resulting nonet obeys mass formulas which respect, to a good extent, the Okubo-Zweig-Iizuka (OZI) rule. OZI allowed strong decays are reasonably reproduced by a single amplitude describing the switch of a qq pair, which transforms the state into two colorless pseudoscalar mesons. Predicted heavy states with one or more quarks replaced by charm or beauty are briefly described; they should give rise to narrow states with exotic quantum numbers.

Citations

• Charmed scalar mesons and related
• Putative light scalar nonet
• Nature of Light Scalar Mesons from their Large-NcBehavior
• Diquarks and Exotic Spectroscopy
• Connection between quark-model eigenstates and low-energy scattering
• φ-meson and unitary symmetry model
• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)

Cited by

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• Strange baryon spectroscopy in the relativistic quark model
• Decay of light scalar mesons into vector-photon and into pseudoscalar mesons
• Sum rule for the partial decay rates of bottom hadrons based on the dynamical supersymmetry of the s quark and the ud diquark
• Effects of staggered fermions and mixed actions on the scalar correlator
• Analysis of the Light-Flavor Scalar and Axial-Vector Diquark States with QCD Sum Rules
• Meson vacuum phenomenology in a three-flavor linear sigma model with (axial-)vector mesons
• Probing isovector scalar mesons in the charmless three-body B decays
• Insight into scalar mesons from their radiative decays
• Nucleon-sigmacoupling constant in QCD sum rules
• Tetraquark particle in the string model
• Mass spectrum of the vector-hidden charm and bottom tetraquark states
• Charmonium possibility of X(3872)
• Analysis of as a tetraquark state with QCD sum rules