Measurement of the branching fraction and decay rate asymmetry of B- --> D_{pi+pi-pi0}K-

Abstract

We report the observation of the decay $B^{-}\to D_{{\pi }^{+}{\pi }^{-}{\pi }^0}{K}^{-}$, where $D_{{\pi }^{+}{\pi }^{-}{\pi }^0}$ indicates a neutral $D$ meson detected in the final state ${\pi }^{+}{\pi }^{-}{\pi }^0$, excluding $K_S{\pi }^0$. This doubly Cabibbo-suppressed decay chain can be used to measure the CKM phase $\gamma$. Using about 229 million $e^{+}{e}^{-}\to B\bar{B}$ events recorded by the BaBar experiment at the PEP-II $e^{+}{e}^{-}$ storage ring, we measure the branching fraction $\mathcal{B}(B^{-}\to D_{{\pi }^{+}{\pi }^{-}{\pi }^0}{K}^{-})=(5.5\pm 1.0(stat.)\pm 0.7(syst.))\times 10^{-6}$ and the decay rate asymmetry $A=0.02\pm 0.16(stat.)\pm 0.03(syst.)$ for the full decay chain.

8 pages, 2 postscript figues

References in corpus (4)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Determining $\gamma$ using $B^{\pm }\to D{K}^{\pm }$ with multibody D decays
• Measurement of the CP-Violating Asymmetry Amplitude sin2beta
• Measuring $\gamma$ in $B^{\pm }\to K^{\pm }(K{K}^{\ast }{)}_D$ decays

Cited by in corpus (5)

• Measurement of ${CP}\xspace$ Violation Parameters with a Dalitz Plot Analysis of $B^{\pm }\to D_{{\pi }^{+}{\pi }^{-}{\pi }^0}{K}^{\pm }$
• Investigating the role of strangeness in baryon$-$antibaryon annihilation at the LHC
• New Measurements of Cabibbo-Suppressed Decays of D Mesons in CLEO-c
• Absolute Measurements of Branching Fractions of Cabibbo-Suppressed Hadronic $D^{0(+)}$ Decays Involving Multiple Pions
• CP-violation parameters from decay rates of $B^{\pm }\to D{K}^{\pm }$, $D\to$ multibody final states