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- W4383473314 abstract "In this paper we revisit $D_s to f_0$ form factors from the light-cone sum rules with the light meson light-cone distribution amplitudes. The main motivation of this study is the differential decay width of $D_s to left[pipi right]_{rm S} e nu_e$ measured recently by BESIII collaboration and the $D_s to f_0$ form factor extracted under the intermediate resonant model. Our result of the differential width of $D_s^+ to f_0 (to left[ pipi right]_{rm S}) e^+ nu_e$ decay obtained under the narrow width approximation is a litter bit lower than the data, the result obtained under the resonant Flatt'e model is in consistent with the data while shows a litter bit larger, indicating a sizable mixing $sim 20degree$ between ${bar s}s$ and ${bar u}u+{bar d}d$ of $f_0$. In order to obtain a model independent prediction, we suggest to calculate $D_s to left[ pipi right]_{rm S}$ form factors with the isoscalar scalar dipion light-cone distribution amplitudes. Our calculation of $D_s to left[ pipi right]_{rm S}$ form factors is carried out at the leading twist level due to the finite knowledge of dipion system, the result of differential width shows a moderate evolution in contrast to that obtained from the narrow width approximation and the Flatt'e model, revealing a bright prospect to study the four-body leptonic decays of heavy mesons with the dimeson light-cone distribution amplitudes." @default.
- W4383473314 created "2023-07-07" @default.
- W4383473314 creator A5020465359 @default.
- W4383473314 creator A5024511509 @default.
- W4383473314 date "2023-07-05" @default.
- W4383473314 modified "2023-09-27" @default.
- W4383473314 title "$D_s to f_0$ form factors and the $D_s^+ to left[ pipi right]_{rm S} e^+ nu_e$ decay from light-cone sum rules" @default.
- W4383473314 doi "https://doi.org/10.48550/arxiv.2307.02309" @default.
- W4383473314 hasPublicationYear "2023" @default.
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