Isospin analysis of B -> Dbar(*) D(*) K decays

Abstract

The peculiar isospin properties of the b -> c cbar s current lead to a rich set of isospin relations for the B -> Dbar(*) D(*) K decays which are presented here. Recent high quality experimental data on the complete set of these decays (22 measurements) are analysed in this context, the isospin relations are tested and the results for the isospin amplitudes are discussed. The comparison between the measured and expected branching fractions yields a new measurement of the ratio of branching fractions Br(Upsilon(4S) -> B+ B-)/Br(Upsilon(4S) -> B0 B0bar)}=0.86 +- 0.13. We finally discuss the implications of our findings for the measurement of sin(2 beta) and cos(2 beta) using these decays.

12 pages, 5 postscript figures, submitted to Physics Letters B Reference 10 (C.W. Bauer et al.) added

References in corpus (2)

• Measurement of the Branching Fractions for the Exclusive Decays of B^0 and B^+ to Dbar^(*)D^(*)K
• Testing factorization in B -> D(*)X decays

Cited by in corpus (7)

• CP Violation and the CKM Matrix: Assessing the Impact of the Asymmetric B Factories
• Exclusive Production of the X(3872) in B Meson Decay
• Triangle singularity in the $B^{-}\to K^{-}{\pi }^{0}X(3872)$ reaction and sensitivity to the $X(3872)$ mass
• Measurement of the B -> Dbar(*)D(*)K branching fractions
• Production of $X(3872)$ Accompanied by a Pion in $B$ Meson Decay
• A precise isospin analysis of B -> Dbar(*) D(*) K decays
• Isospin analysis of $B\to D^{\ast }\bar{D}K$ and the absence of the $Z_c(3900)$ in $B$ decays