$|V_{ub}|$ determination by $B\to D_s\pi$

Abstract

We investigate $\ovar{B^0} \to D_s^- π^+$ decay in perturbative QCD approach which has recently been applied to $B$ meson decays. $\ovar{B^0} \to D_s^- π^+$ decay (and its charge conjugated mode) can be one of the hopeful modes to determine $|V_{ub}|$ since it occurs through $b\to u$ transition only. We estimate both factorizable and non-factorizable contribution, and show that the non-factorizable contribution is much less than the factorizable one. Our calculation gives ${BR}(\ovar{B^0} \to D_s^- π^+) = (50 \sim 70) \times f_{Ds}^2|{V_{ub}}{V_{cs}}|^2$.

12 pages, 3 figures, LaTeX2e with graphics package

References in corpus (1)

• Observation of Ds+ K- and evidence for Ds+ pi- final states in neutral B decays

Cited by in corpus (4)

• Study of color suppressed modes $B^0\to {\bar{D}}^{(\ast )0}{\eta }^{(\prime )}$
• Search of $D_{sJ}^{\ast }$ mesons in $B$ meson decays
• Analysis of Supersymmetric Effects on B -> phi K Decays in the PQCD Approach
• Measurement of Vub at Belle