Observation of $B^0\to D^{\ast -}(5\pi {)}^{+}$, $B^{+}\to D^{\ast -}(4\pi {)}^{++}$ and $B^{+}\to {\bar{D}}^{\ast 0}(5\pi {)}^{+}$

Abstract

We report the first observation of a number of decay modes of the B meson, namely $B^0\to D^{\ast -}(5\pi {)}^{+}$, $B^{+}\to D^{\ast -}(4\pi {)}^{++}$ and $B^{+}\to {\bar{D}}^{\ast 0}(5\pi {)}^{+}$, where $(n\pi )$ implies the combination of n charged pions. The analysis is based on a 140 fb${}^{-1}$ data sample collected at the ${\rm Y}(4S)$ resonance with the Belle detector at KEKB. We measure $\mathcal{B}(B^0\to D^{\ast -}(5\pi {)}^{+})=(4.72\pm 0.59\pm 0.71)\times 10^{-3}$, $\mathcal{B}(B^{+}\to D^{\ast -}(4\pi {)}^{++}=(2.56\pm 0.26\pm 0.33)\times 10^{-3}$ and $\mathcal{B}(B^{+}\to {\bar{D}}^{\ast 0}(5\pi {)}^{+})=(5.67\pm 0.91\pm 0.85)\times 10^{-3}$. We also provide improved measurements of the branching fractions for the decay modes $B^0\to D^{\ast -}(3\pi {)}^{+}$, $B^{+}\to {\bar{D}}^{\ast 0}(3\pi {)}^{+}$ and $B^0\to {\bar{D}}^{\ast 0}(4\pi {)}^0$.

5 pages, 2 figures, Typo. KEK Preprint 2004-45, Belle Preprint 2004-25, submitted to PRD(R)

References in corpus (3)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Comment on studying the corrections to factorization in B -> D(*) X
• First Observation of barB0 to D*0 pi+pi+pi-pi- Decays

Cited by in corpus (6)

• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of summer 2016
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2018
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2021
• Measurement of the ratio of the $B^0\to D^{\ast -}{\tau }^{+}{\nu }_{\tau }$ and $B^0\to D^{\ast -}{\mu }^{+}{\nu }_{\mu }$ branching fractions using three-prong $\tau$-lepton decays
• Test of Lepton Flavor Universality by the measurement of the $B^0\to D^{\ast -}{\tau }^{+}{\nu }_{\tau }$ branching fraction using three-prong $\tau$ decays
• Study of $B^{-}\to D{K}^{-}{\pi }^{+}{\pi }^{-}$ and $B^{-}\to D{\pi }^{-}{\pi }^{+}{\pi }^{-}$ decays and determination of the CKM angle $\gamma$