Spinless mesons in the chiral-symmetry scheme
19705 pages
Published in:
- Phys.Rev.D 1 (1970) 1786-1790
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Abstract: (APS)
The multiplet of the pseudoscalar mesons K, π, η, and η′ with their scalar partners is analyzed as a reducible representation of chiral SU2⊗SU2. We introduce a spontaneous breaking mechanism of this symmetry, leaving isospin and hypercharge as residual invariance. We consider also in this scheme a Lagrangian model, which exhibits various remarkable group-theoretical properties, and leads to numerical values, mass, and mixing-angle relations, in very good agreement with experimental data.- symmetry: chiral
- meson: multiplet
- multiplet: meson
- symmetry: su(2) x su(2)
- model: lagrangian
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