Factorization and angular distribution asymmetries in charmful baryonic B decays

Abstract

We examine the validity of the generalized factorization method and calculate the angular correlations in the charmful three-body baryonic decays of ${\bar{B}}^0\to \Lambda \bar{p}{D}^{(\ast )+}$. With the timelike baryonic form factors newly extracted from the measured baryonic $B$ decays, we obtain $\mathcal{B}({\bar{B}}^0\to \Lambda \bar{p}{D}^{+},\Lambda \bar{p}{D}^{\ast +})=(1.85\pm 0.30,2.75\pm 0.24)\times 10^{-5}$ to agree with the recent data from the BELLE Collaboration, which demonstrates that the theoretical approach based on the factorization still works well. For the angular distribution asymmetries, we find ${\mathcal{A}}_{\theta }({\bar{B}}^0\to \Lambda \bar{p}{D}^{+},\Lambda \bar{p}{D}^{\ast +})=(-0.030\pm 0.002,+0.150\pm 0.000)$, which are consistent with the current measurements. Moreover, we predict that ${\mathcal{A}}_{\theta }({\bar{B}}^0\to p\bar{p}{D}^0,p\bar{p}{D}^{\ast 0})=+0.04\pm 0.01$. Future precise explorations of these angular correlations at BELLE and LHCb as well as super-BELLE are important to justify the present factorization approach in the charmful three-body baryonic decays.

10 pages, 1 figure, revised version accepted for publication in PRD

References in corpus (6)

• Decay constants of the charmed vector mesons $D^{\ast }$ and $D_s^{\ast }$ from QCD sum rules
• Study of the decay mechanism for B+ to p pbar K+ and B+ to p pbar pi+
• Charmful Three-body Baryonic B decays
• Angular distributions in three-body baryonic B decays
• Violation of PCAC and two-body baryonic $B$ and $D_s$ decays
• Evidence for CP violation in $B^{+}\to p\bar{p}{K}^{+}$ decays

Cited by in corpus (8)

• Four-body baryonic decays of $B\to p\bar{p}{\pi }^{+}{\pi }^{-}({\pi }^{+}{K}^{-})$ and $\Lambda \bar{p}{\pi }^{+}{\pi }^{-}(K^{+}{K}^{-})$
• Direct CP violation in internal W-emission dominated baryonic B decays
• Three-body charmless baryonic ${\bar{B}}_s^0$ decays
• Study of $B^{-}\to \Lambda \bar{p}{\eta }^{{(}^{\prime })}$ and ${\bar{B}}_s^0\to \Lambda \bar{\Lambda }{\eta }^{{(}^{\prime })}$ decays
• Observation of $B^{+}\to p\bar{\Lambda }{K}^{+}{K}^{-}$ and $B^{+}\to \bar{p}\Lambda K^{+}{K}^{+}$
• Roles of scalar mesons in charmless ${\Lambda }_b$ decays
• Angular asymmetries in $B\to \Lambda \bar{p}M$ decays
• Exploring the simplest purely baryonic decay processes