6533b7cffe1ef96bd12597d1

RESEARCH PRODUCT

Two-photon and one-photon–one-vector meson decay widths of thef0(1370),f2(1270),f0(1710),f2′(1525), andK2*(1430)

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We calculate the radiative decay widths, two-photon ($\ensuremath{\gamma}\ensuremath{\gamma}$) and one-photon--one-vector meson ($V\ensuremath{\gamma}$), of the dynamically generated resonances from vector-meson--vector-meson interaction in a unitary approach based on the hidden-gauge Lagrangians. In the present paper we consider the following dynamically generated resonances: ${f}_{0}(1370)$, ${f}_{0}(1710)$, ${f}_{2}(1270)$, ${f}_{2}^{\ensuremath{'}}(1525)$, ${K}_{2}^{*}(1430)$, two $\mathrm{\text{strangeness}}=0$ and $\mathrm{\text{isospin}}=1$ states, and two $\mathrm{\text{strangeness}}=1$ and $\mathrm{\text{isospin}}=1/2$ states. For the ${f}_{0}(1370)$ and ${f}_{2}(1270)$ we reproduce the previous results for the two-photon decay widths and further calculate their one-photon--one-vector decay widths. For the ${f}_{0}(1710)$ and ${f}_{2}^{\ensuremath{'}}(1525)$ the calculated two-photon decay widths are found to be consistent with data. The ${\ensuremath{\rho}}^{0}\ensuremath{\gamma}$, $\ensuremath{\omega}\ensuremath{\gamma}$ and $\ensuremath{\phi}\ensuremath{\gamma}$ decay widths of the ${f}_{0}(1370)$, ${f}_{2}(1270)$, ${f}_{0}(1710)$, ${f}_{2}^{\ensuremath{'}}(1525)$ are compared with the results predicted by other approaches. The ${K}^{*+}\ensuremath{\gamma}$ and ${K}^{*0}\ensuremath{\gamma}$ decay rates of the ${K}_{2}^{*}(1430)$ are also calculated and compared with the results obtained in the framework of the covariant oscillator quark model. The results for the two states with $\mathrm{\text{strangeness}}=0$, $\mathrm{\text{isospin}}=1$ and two states with $\mathrm{\text{strangeness}}=1$, $\mathrm{\text{isospin}}=1/2$ are predictions that need to be tested by future experiments.