Theory of Scalars
N.N. Achasov, A.V. Kiselev, G.N. Shestakov
TL;DR
This paper explores the nature of light scalar mesons, emphasizing the role of Quantum Field Theory, and provides evidence for their four-quark components through various decay and collision processes.
Contribution
It presents a comprehensive analysis of light scalar mesons, highlighting their four-quark structure and the importance of Quantum Field Theory in understanding their properties.
Findings
Evidence for four-quark components in light scalars
Analysis of meson decays and collisions supporting scalar structure
Chiral dynamics and confinement effects on light scalars
Abstract
Outline: 1. Introduction, 2. Confinement, chiral dynamics and light scalar mesons, 3. Chiral shielding of the \sigma(600), chiral constraints (the CGL band), the \sigma(600) and the f0(980) in \pi\pi->\pi\pi, \pi\pi->KKbar, \phi->\gamma\pi0\pi0, 4. The \phi meson radiative decays on light scalar resonances, 5. Light scalars in \gamma\gamma collisions. Evidence for four-quark components of light scalars is given. The priority of Quantum Field Theory in revealing the light scalar mystery is emphasized.
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