Decays $B_s\to J/\psi +\eta$ and $B_s\to J/\psi +{\eta }^{\prime }$ in the framework of covariant quark model

Abstract

The covariant quark model represents an appropriate theoretical framework to describe the recent results on $B_s\to J/\psi +\eta$ and $B_s\to J/\psi +{\eta }^{\prime }$ decays from the Belle collaboration. In this article we present the main features of he covariant quark model together with details on some of its aspects and methods, which we consider to be important. Further we apply the model specifically to the studied decay processes and give numerical results on decay widths as they follow from the odel. We conclude that the model, with most of its parameters previously fixed from different processes, is able to incorporate the new measurements from the Belle experiment.

14 pages, 1 figure; v2: more discussions and references are added, version accepted for publication in PRD

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Cited by in corpus (12)

• Nonleptonic two-body decays of single heavy baryons ${\Lambda }_Q$, ${\Xi }_Q$, and ${\Omega }_Q$ $(Q=b,c)$ induced by $W$ emission in the covariant confined quark model
• Polarization effects in the cascade decay Lambda_b -> Lambda(-> p pi-) + J/psi(-> l+ l-) in the covariant confined quark model
• Heavy-to-light semileptonic decays of Lambda_b and Lambda_c baryons in the covariant confined quark model
• Analysis of the semileptonic and nonleptonic two-body decays of the double heavy charm baryon states ${\Xi }_{cc}^{++},{\Xi }_{cc}^{+}$ and ${\Omega }_{cc}^{+}$
• On the meson mass spectrum in the covariant confined quark model
• Form factors of the B-S-transitions in the covariant quark model
• Rare $B_s$ decays in the relativistic quark model
• Branching ratios, $CP$ asymmetries and polarizations of $B\to \psi (2S)V$ decays
• Understanding the cross section of $e^{+}{e}^{-}\to \eta J/\psi$ process via nonrelativistic QCD
• Nucleon tensor form factors in a relativistic confined quark model
• 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
• Radiative transitions of charmonium states in the covariant confined quark model