Model-independent approach to η→π+π−γ and η′→π+π−γ

2011/08/31 by F. Stollenwerk, Felix Stollenwerk, C. Hanhart +5 · 4 citations
Mathematics · Physics and Astronomy · #High-Energy Particle Collisions Research #Isovector #Mathematical physics #Mathematics #Meson #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th

paper · pdf · doi:10.1016/j.physletb.2011.12.008

published as Phys.Lett.B707:184-190,2012 · 16 pages, 4 figures

openalex publication_date 2011/12/10 · arxiv created 2011/12/15 · arxiv updated 2015/03/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We present a new, model-independent method to analyze radiative decays of mesons to a vector, isovector pair of pions of invariant mass square below the first significant pion-pion threshold in the vector channel. It is based on a combination of chiral perturbation theory and dispersion theory. This allows for a controlled inclusion of resonance physics without the necessity to involve vector meson dominance explicitly. As an example, the method is applied to an analysis of the reactions eta -> pi+ pi- gamma and eta'->pi+ pi- gamma.

Citations

• Measurement of σ(e+e−→π+π−γ) and extraction of σ(e+e−→π+π−) below 1 GeV with the KLOE detector
• Precise Measurement of thee+e−→π+π−(γ)Cross Section with the Initial State Radiation Method atBABAR
• Study ofγπ→ππbelow 1 GeV using an integral equation approach
• Measurement of Γ(η→ π⁺π^-γ)/Γ(η→ π⁺π^-π⁰) with KLOE experiment
• Gell-Mann-Okubo Mass Formula Revisited
• Is theρMeson a Dynamical Gauge Boson of Hidden Local Symmetry?
• Chiral perturbation theory to one loop
• Chiral effective lagrangian in the large-N limit: the nonet case
• Review of Particle Physics
• Anomalous chiral perturbation theory meson Lagrangian to orderp6reexamined

Cited by

• The branching ratio ω → π ⁺π ^- ω → π + π - revisited
• How to employ B ¯ d 0 → J / ψ π η , K ¯ K B_d⁰→ J/ψ (\uppi η, KK) decays to extract information on πη scattering
• Exclusive measurement of the η→π+π−γ decay
• Identify hadron anomalous couplings at colliders
• Extracting the chiral anomaly from e⁺e^-→ 3π