A Theoretical Prediction for Exclusive Decays $B\to K(K^{\ast }){\eta }_c$

Abstract

The decay rates for the exclusive B decays $B\to K{\eta }_c$ and $B\to K^{\ast }{\eta }_c$ are calculated in the context of the heavy quark effective theory. We obtain $\Gamma (B\to K{\eta }_c)/\Gamma (B\to K\psi )=1.6\pm 0.2$ and $\Gamma (B\to K^{\ast }{\eta }_c)/\Gamma (B\to K^{\ast }\psi )=0.39\pm 0.04$. These results lead to estimates $BR(B\to K{\eta }_c)=(0.11\pm 0.02)\%$ and $BR(B\to K^{\ast }{\eta }_c)=(0.05\pm 0.01)\%$ if we use the central current experimental values for $B\to (K,K^{\ast })\psi$ branching ratios.

6 pages, LaTex

References in corpus (2)

• Exclusive Decays $B\to K\psi ,B\to K^{\ast }\psi$ using Heavy Quark Symmetries
• Non-Leptonic B Decays into K-Resonances

Cited by in corpus (6)

• Study of B Decays to Charmonium States $B\to {\eta }_{c}K$ and $B\to {\chi }_{C0}K$
• A perturbative approach to the eta_c-gamma transition form factor
• Large corrections to asymptotic $F_{{\eta }_c\gamma }$ and $F_{{\eta }_b\gamma }$ in the light-cone perturbative QCD
• Branching Fraction Measurements of B ->etac K Decays
• First observation of the decay ${\Lambda }_b^0\to {\eta }_c(1S)p{K}^{-}$
• B-> K photon photon via intermediate eta'