A precise isospin analysis of B -> Dbar(*) D(*) K decays

Abstract

We present a precise isospin analysis of the B -> Dbar(*) D(*) K decays using new recent experimental measurements on these final states. The decays B -> Dbar(*) D(*) K, originating from b -> c cbar s transitions, are linked by a rich set of isospin properties. The isospin relations that connect the decay modes are presented and a fit is performed to obtain the isospin amplitudes and phases. We discuss the results of the fit and present a new measurement of the ratio of branching fractions BR(Upsilon(4S) -> B+ B-) and BR(Upsilon(4S) -> B0 B0bar). We finally discuss the implications of our findings for the measurement of the unitarity matrix parameters sin(2 beta) and cos(2 beta) using these decays.

14 pages, 6 figures, results include now Babar and Belle measurements, published in Physics Letters B. arXiv admin note: substantial text overlap with arXiv:hep-ph/0401014

References in corpus (7)

• Observation of a new D_sJ meson in B+->D0BD0K+ decays
• Study of Resonances in Exclusive B Decays to Dbar(*)D(*)K
• Study of the $B\to X(3872)(\to D^{\ast 0}{\bar{D}}^0)K$ decay
• Measurement of the B -> Dbar(*)D(*)K branching fractions
• Measurement of the Branching Fraction and Time-Dependent CP Asymmetry in the Decay B0->D*+D*-Ks
• Measurement of Branching Fraction and Time-Dependent CP Asymmetry Parameters in B0 -> D*+ D*- Ks Decays
• Colour rearrangements in B-meson decays

Cited by in corpus (3)

• Triangle singularity in the $B^{-}\to K^{-}{\pi }^{0}X(3872)$ reaction and sensitivity to the $X(3872)$ mass
• Production of $X(3872)$ Accompanied by a Pion in $B$ Meson Decay
• Production of $X(3872)$ Accompanied by a Soft Pion at Hadron Colliders