Radiative decay into $\gamma P$ of the low lying axial-vector mesons

Abstract

We evaluate the radiative decay into a pseudoscalar meson and a photon of the whole set of the axial-vector mesons dynamically generated from the vector-pseudoscalar meson ($VP$) interaction. We take into account tree level and loop diagrams coming from the axial-vector decay into a vector and a pseudoscalar meson. We find a large span for the values of the radiative widths of the different axial-vector mesons. In particular, we evaluate the radiative decay into $K\gamma$ of the two $K_1(1270)$ states, recently claimed theoretically, and discuss the experimental values quoted so far on the assumption of only one state.

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Cited by in corpus (12)

• Hidden gauge formalism for the radiative decays of axial-vector mesons
• Pseudocalar meson and vector meson interactions and dynamically generated axial-vector mesons
• Meson loops in the $f_0(980)$ and $a_0(980)$ radiative decays into $\rho$, $\omega$
• $\Delta (1232)$ Resonance Contribution to Two-Photon Exchange in Electron-Proton Scattering Revisited
• Composite and elementary natures of a1(1260) meson
• Regge phenomenology of pion photoproduction off the nucleon at forward angles
• Radiative decays of the Y(3940), Z(3930) and the X(4160) as dynamically generated resonances
• Regge phenomenology in ${\pi }^0$ and $\eta$ photoproduction
• On the role of meson loops in the $f_0(1710)$ decay into $V\gamma$
• Partial decay widths of $\varphi (2170)$ to kaonic resonances
• Theoretical description of the $\mathbf{J}/\mathbf{\psi }\to \mathbf{\eta }({\mathbf{\eta }}^{\prime }){\mathbf{h}}_1(1380)$, $\mathbf{J}/\mathbf{\psi }\to \mathbf{\eta }({\mathbf{\eta }}^{\prime }){\mathbf{h}}_1(1170)$ and $\mathbf{J}/\mathbf{\psi }\to {\mathbf{\pi }}^0{\mathbf{b}}_1(1235{)}^0$ reactions
• Amplitude Analysis of the Isospin-Violating Decay $J/\psi \to \gamma \eta {\pi }^0$