The physics of the $\eta$--${\eta }^{\prime }$ system versus $B^0\to J/\Psi \eta ({\eta }^{\prime })$ and $B_s\to J/\Psi \eta ({\eta }^{\prime })$ decays

Abstract

An approach to the properties of the $\eta$--${\eta }^{\prime }$ system developed to solve the famous $U(1)$ problem is used to calculate the partial widths ratios to $\eta$ and ${\eta }^{\prime }$ in the $B^0\to J/\Psi \eta ({\eta }^{\prime },{\pi }^0)$ and $B_s\to J/\Psi \eta ({\eta }^{\prime })$ decays. We obtain the results in agreement with the experimental data.

Comments: 8 pages