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- W2558193270 abstract "We revisit the calculation of the width for the radiative decay of a $$1^{+-}$$ heavy $$Q bar{Q}$$ meson via the channel $$1^{+-} rightarrow 0^{-+} +gamma $$ in the covariant light-front quark model. We carry out the reduction of the light-front amplitude in the non-relativistic limit, explicitly computing the leading and next-to-leading order relativistic corrections. This shows the consistency of the light-front approach with the non-relativistic formula for this electric dipole transition. Furthermore, the theoretical uncertainty in the predicted width is studied as a function of the inputs for the heavy-quark mass and wave function structure parameter. We analyze the specific decays $$h_{mathrm{c}}(1P) rightarrow eta _{mathrm{c}}(1S) + gamma $$ and $$h_{mathrm{b}}(1P) rightarrow eta _{mathrm{b}}(1S) + gamma $$ . We compare our results with experimental data and with other theoretical predictions from calculations based on non-relativistic models and their extensions to include relativistic effects, finding reasonable agreement." @default.
- W2558193270 created "2016-12-08" @default.
- W2558193270 creator A5083553116 @default.
- W2558193270 date "2017-04-01" @default.
- W2558193270 modified "2023-09-27" @default.
- W2558193270 title "Revisiting radiative decays of $$1^{+-}$$ 1 + - heavy quarkonia in the covariant light-front approach" @default.
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- W2558193270 doi "https://doi.org/10.1140/epjc/s10052-017-4818-5" @default.
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