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By assuming that the scalar meson $K_0^*(1430)$ belongs to the first excitedstates or the lowest lying ground states, we study the pure annihilation-typedecays $B \to K_0^{*\pm}(1430)K^{(*)\mp}$ in the QCD factorization approach.Within the standard model, the branching fractions are at the order of$10^{-8}-10^{-7}$, which is possible to be measured in the ongoing LHCbexperiment or forthcoming Belle-II experiment. We also study these decays inthe family non-universal $Z^\prime$ model. The results show that if$m_{Z^\prime}\approx 600\mathrm{GeV}$ ($\zeta=0.02$), both the branchingfractions and $CP$ asymmetries of $\overline B^0\to K_0^{*+}(1430)K^-$ could bechanged remarkably, which provides us a place for probing the effect of newphysics. These results could be used to constrain the parameters of $Z^\prime$model.

Pure Annihilation Type $B \to K_0^{*\pm}(1430)K^{(*)\mp}$ Decays in the Family Non-universal $Z^\prime$ Model

Pure Annihilation Type $B \to K_0^{\pm}(1430)K^{()\mp}$ Decays in the Family Non-universal $Z^\prime$ Model