eta, eta-prime -> pi^+ pi^- gamma with coupled channels

Abstract

The decays eta, eta-prime -> pi^+ pi^- gamma are investigated within an approach that combines one-loop chiral perturbation theory with a coupled channel Bethe-Salpeter equation which satisfies unitarity constraints and generates vector mesons dynamically from composite states of two pseudoscalar mesons. It is furthermore shown that the inclusion of the eta-prime as a dynamical degree of freedom does not renormalize the Wess-Zumino-Witten term.

arXiv comment21 pages, 11 figures

References in corpus (11)

• Large N_c in chiral perturbation theory
• Extension of the Chiral Perturbation Theory Meson Lagrangian to Order $P^6$
• The anomalous chiral Lagrangian of order $p^6$
• The anomalous chiral perturbation theory meson Lagrangian to order $p^6$ revisited
• Chiral Anomaly and Eta-Eta' Mixing
• Hadronic decays of eta and eta-prime with coupled channels
• Eta-eta' mixing in U(3) chiral perturbation theory
• Allowed Eta Decay Modes and Chiral Symmetry
• The eta-prime -> eta pi pi decay in U(3) chiral perturbation theory
• Two-photon decays of pi^0, eta and eta-prime
• S-wave Meson-Meson Scattering from Unitarized U(3) Chiral Lagrangians

Cited by in corpus (13)

• Physics with the KLOE-2 experiment at the upgraded DA$\varphi$NE
• Precision tests of fundamental physics with $\eta$ and ${\eta }^{\prime }$ mesons
• Model-independent approach to eta -> pi+ pi- gamma and eta' -> pi+ pi- gamma
• Exclusive Measurement of the eta --> pi+ pi- gamma Decay
• eta, eta-prime --> pi+ pi- l+ l- in a chiral unitary approach
• Gauge invariance in two-particle scattering
• Measurement of Γ(η-> π^+π^-γ)/Γ(η-> π^+π^-π^0) with the KLOE Detector
• Amplitude analysis of the anomalous decay ${\eta }^{\prime }\to {\pi }^{+}{\pi }^{-}\gamma$
• Measurements of Branching Ratios for $\eta$ Decays into Charged Particles
• Precision measurement of the branching fractions of ${\eta }^{\prime }$ decays
• Can one see the number of colors in eta, eta-prime --> pi^+ pi^- gamma?
• $CP$ violation in ${\eta }^{(\prime )}\to {\pi }^{+}{\pi }^{-}{\mu }^{+}{\mu }^{-}$ decays
• ${\eta }^{{(}^{\prime })}\to {\pi }^{+}{\pi }^{-}{\gamma }^{(\ast )}$ in large-$N_c$ chiral perturbation theory