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

Abstract

By assuming that the scalar meson $K_0^{\ast }(1430)$ belongs to the first excited states or the lowest lying ground states, we study the pure annihilation-type decays $B\to K_0^{\ast \pm }(1430)K^{(\ast )\mp }$ 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 LHCb experiment or forthcoming Belle-II experiment. We also study these decays in the family non-universal $Z^{\prime }$ model. The results show that if $m_{Z^{\prime }}\approx 600\mathrm{GeV}$ ($\zeta =0.02$), both the branching fractions and $CP$ asymmetries of ${\overline{B}}^0\to K_0^{\ast +}(1430)K^{-}$ could be changed remarkably, which provides us a place for probing the effect of new physics. These results could be used to constrain the parameters of $Z^{\prime }$ model.

9 pages, 18 figures

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• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
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Cited by in corpus (1)

• Study of $B_{u,d,s}\to K_0^{\ast }(1430)P$ and $K_0^{\ast }(1430)V$ decays within QCD factorization