Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1994-06-24
Phys.Lett. B339 (1994) 270-274
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 pages LATEX, (used new data on B decays, give determination of $f_{\eta_c}$ and more models)
Scientific paper
10.1016/0370-2693(94)90643-2
We calculate the semi-inclusive processes B $\rightarrow X_{s} \eta_c$ and relate it to B $\rightarrow X_{s} \psi$ in next to leading order QCD, and show how it can be used to determine an accurate value of $f_{\eta_{c}}$. The exclusive modes B $\rightarrow$ K$\eta_c$ and B $\rightarrow$ K$\psi$ also yield similar results, whereas B $\rightarrow$ K$^*\eta_c$ and B $\rightarrow$ K$^*\psi$ can provide valuable information on hadronic form factors. We also estimate the branching ratios and the ratios of exclusive to inclusive decay modes dominated by $b \rightarrow s\e$.
Deshpande Nilendra G.
Trampetic Josip
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