Study of exclusive decays of Bs→ψ(1S,2S)Ks and Bs→ηc(1S,2S)Ks
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Abstract
We analyze the exclusive two-body nonleptonic decays of Bs meson to ground as well as radially excited 2S charmonium state with a light meson Ks, induced by the b→cc¯d transition. Within the framework of relativistic independent quark model based on a flavor-independent interaction potential in scalar-vector harmonic form, we calculate the weak form factors from the overlapping integrals of meson wave function obtained in this model. Using the factorization approximation, we predict the branching fractions for the Bs→ψ(1S,2S)Ks and Bs→ηc(1S,2S)Ks, which can be compared with future theoretical predictions. Branching fraction for Bs→J/ψKs decay is found to be in good agreement with the data from the LHCb collaboration, whereas for Bs→ψ(2S)Ks, it is found to be within the detection ability of the CMS collaboration. We also predict the ratios of branching fractions (R), which are in broad agreement with the data from LHCb collaboration. These results indicate that the present approach works well in the description of exclusive nonleptonic Bs decays within the framework of the relativistic independent quark model. Published by the American Physical Society 2024
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