Study of B0-->J/Psi D(*) and etac D(*) in Perturbative QCD

Abstract

Motivated by recent interest in 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. We find that, within that framework, these decays are calculable since the heavy $c\bar{c}$ pair in the final states is created by a hard gluon. The branching ratios are estimated to be around $10^{-7}\sim 10^{-8}$, too small to be consistent with the data, suggesting that other mechanism(s) contribute to the observed excess of soft $J/\Psi$ in $B^0\to J/\Psi +X$ decays. The possibility of the production of a hybrid $s\bar{d}g$ meson with mass about 2 GeV is briefly entertained.

9 pages, 3 figures, to appear in PRD

Cited by in corpus (19)

• Implications of LHCb measurements and future prospects
• Study of Inclusive Production of Charmonium Mesons in B Decay
• Constraints on the nonuniversal Z^\prime couplings from B\toπK, πK^{\ast} and ρK Decays
• Revisiting the Annihilation Corrections in Non-leptonic ${\bar{B}}_s^0$ Decays within QCD Factorization
• Contribution of final state interaction to the branching ratio of $B\to J/\psi D$
• Evidence for B+ --> Jpsi p Lambda-bar and Search for B0 --> Jpsi p p-bar
• Rare decays of B-> J/ψD^(*) and B->η_c D^(*)in pQCD Approach
• The Rare Radiative Annihilation Decays ${\bar{B}}_{s,d}^0\to J/\psi \gamma$
• The effects of a family non-universal Z-prime boson on B--->pipi decays
• Search for B -> J/psi D Decays
• Study of $B_s$ $\to$ ${\eta }_c(J/\psi )D$ decay with perturbative QCD approach
• Accounting for Slow J/psi from B Decay
• Probing Intrinsic Charm with Semileptonic B Decays
• Search for B^- --> J/psi Lambda p-bar decay
• The momentum distribution of J/psi in B decays
• Search for B0 -> J/psi D0bar and B+ -> J/psi D0bar pi+ decays
• Weak Radiative B Decays
• A search for rare $B\to D{\mu }^{+}{\mu }^{-}$ decays
• Semileptonic and nonleptonic B decays to three charm quarks: B->J/psi (eta_c) D l nu and J/psi (eta_c) D pi