Chiral dynamics of many-pion systems

Abstract

Based on the Weinberg lagrangian or, in a new language, the lagrangian of hidden local symmetry added with the term induced by the anomalous lagrangian of Wess and Zumino, the dynamics of the decays rho to 4 pi and omega to 5 pi is considered. The excitation curves of rho resonance in its decay to 4 pi are obtained for the first time. The comparison with recent CMD-2 data is given. The partial widths of the decays omega to 2 pi^+ 2 pi^- pi^0 and omega to pi^+ pi^- 3 pi^0 which can be measured on colliders with luminosity 10^{33}{cm }^{-2}{s}^{-1} are evaluated for the first time.

Revtex, 8 pages, 2 ps figures

Cited by in corpus (5)

• Electron-positron annihilation into four charged pions and the a_1-rho-pi Lagrangian
• Role of a_1(1260) resonance in multipion decays of light vector mesons
• Many pion decays of rho(770) and omega(782) mesons in chiral theory
• Joint description of the e+e- annihilation into both four-pion channels
• Hidden local symmetry and the reaction e^+e^-\toπ^+π^-π^+π^- at energies \sqrt{s}\leq 1 GeV