Light Scalars in Field Theory
N.N. Achasov
TL;DR
This paper explores the nature of light scalar mesons, emphasizing their four-quark components and the importance of quantum field theory in understanding their properties and interactions.
Contribution
It provides new insights into the structure and mixing of light scalar mesons, highlighting evidence for their four-quark components and discussing their behavior in various decay and collision processes.
Findings
Evidence for four-quark components of light scalars
Light scalar mesons are not Kar K molecules
Quantum Field Theory is crucial in understanding light scalars
Abstract
Outline: 1. Introduction, 2. Confinement, chiral dynamics and light scalar mesons, 3. Chiral shielding of \sigma(600), chiral constraints, \sigma(600), f_0(980) and their mixing in \pi\pi\to\pi\pi, \pi\pi\to K\bar K, and \phi\to\gamma\pi0\pi0, 4. The \phi meson radiative decays on light scalar resonances. 5. Why a0(980) and f0(980) are not the K\bar K molecules. 6. 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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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · Atomic and Subatomic Physics Research · Particle physics theoretical and experimental studies