ϱ → 4π in chirally symmetric models

1995/08/23 by Robert S. Plant, Michael C. Birse
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1016/0370-2693(95)01273-7

published as Phys.Lett. B365 (1996) 292 · 12 pages (RevTeX)

arxiv created 1995/08/23 · openalex publication_date 1996/01/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

The decays ρ⁰→ 2π⁺2π^- and ρ⁰→ 2π⁰π⁺π^- are studied using various effective Lagrangians for π and ρ (and in some cases a₁) mesons, all of which respect the approximate chiral symmetry of the strong interaction. Partial widths of the order of 1 keV or less are found in all cases. These are an order of magnitude smaller than recent predictions based on non-chiral models.

Citations

• Effective Lagrangians and Field Algebras with Chiral Symmetry
• Structure of Phenomenological Lagrangians. I
• Structure of Phenomenological Lagrangians. II