Annihilation-Type Charmless Radiative Decays of B Meson in Non-universal Z^\prime Model

Understand

We study charmless pure annihilation type radiative B decays within the QCD factorization approach.

• After adding the vertex corrections to the naive factorization approach, we find that the branching ratios of $\bar{B}^0_d\to\phi\gamma$, $\bar{B}^0_s\to\rho^0\gamma$ and $\bar{B}^0_s\to\omega\gamma$ within the standard model are at the order of $\mathcal{O}(10^{-12})$, $\mathcal{O}(10^{-10})$ and $\mathcal{O}(10^{-11})$, respectively.
• The smallness of these decays in the standard model makes them sensitive probes of flavor physics beyond the standard model.
• To explore their physics potential, we have estimated the contribution of $Z^\prime$ boson in the decays.