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• W3199120628 abstract "Motivated by the reported discrepancies between experimental data and Standard Model predictions for the branching ratios of the color-allowed decays $overline{B}^0 to D^{(*)+}K^-$ and $overline{B}^0_s to D^{(*)+}_s pi^-$, we study final-state rescattering effects on $overline{B}_{(s)}to D^{(*)}_{(s)} P$ and $overline{B}_{(s)}to D_{(s)} V$, where $P$ ($V$) is a light pseudoscalar (vector) meson. We consider quasi-elastic rescatterings in the framework of $SU(3)$ and $U(3)$ flavor symmetries, and find that the effects cannot explain the measured branching ratios of the color-allowed and color-suppressed decays simultaneously. We also perform global fits to the $overline{B}_{(s)}to D^{(*)}_{(s)} P$ and $overline{B}_{(s)}to D_{(s)} V$ data, allowing for new physics contributions to the Wilson coefficient $a_1$ associated with the color-allowed tree amplitudes. It is shown that the fits prefer a downward shift of $mathcal{O}(10%)$ in $a_1$ even in the presence of the quasi-elastic rescattering contributions." @default.
• W3199120628 created "2021-09-27" @default.
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• W3199120628 creator A5084556968 @default.
• W3199120628 date "2021-09-23" @default.
• W3199120628 modified "2023-09-27" @default.
• W3199120628 title "Revisiting rescattering contributions to $overline{B}_{(s)}to D^{(*)}_{(s)} M$ decays" @default.
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