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Rare decays of B-> J/\psi D^(*) and B->\eta_c D^(*)in pQCD Approach by Li, Ying; Lu, Cai-Dian; Qiao, Cong-Feng is a scholarly article available to read on EtoBox.

What is Rare decays of B-> J/\psi D^(*) and B->\eta_c D^(*)in pQCD Approach about?

Motivated by the recent measurement of the upper limit of ${B}^0 \to J/\psi D$ branching ratio, which is important in accounting for the soft $J/\psi$ production in B decays, we investigate ${B}^0 \to J/\psi D^{(\star)}$ and $\eta_c D^{(\star)}$ decays in perturbative QCD approach based on $k_T$ factorization. Being pure annihilation (W-exchange) decays, these branching ratios are estimated to be at the order of $10^{-5} \sim 10^{-7}$, which are just at the corner of being observable at the $B$ factories. The measurements of these decay channels may help us to understand the QCD dynamics in the corresponding energy scale, especially the reliability of pQCD approach to these processes.

Author

Li, Ying; Lu, Cai-Dian; Qiao, Cong-Feng

Published

2005

Language

EN