B decays to Ds^(*) and D^*

TL;DR

This paper reports on measurements of B^0 meson decays to D_s^(*)+ and D^*-, including production fractions, momentum spectra, and branching ratios, using data from the BABAR detector.

Contribution

It provides new measurements of inclusive and exclusive B^0 decay modes involving D_s^(*)+ and D^*-, utilizing partial and full reconstruction techniques.

Findings

Measured production fractions of D_s^(*)+ in B^0 decays.

Determined branching ratios for B^0 --> D^*- D_s^(*)+ decays.

Reported absolute branching fractions for B^0 --> D^*- pi+ and B^0 --> D^*- rho+.

Abstract

The e+e- annihilation data recorded with the BABAR detector has been used to study B^0 decays to Ds^(*)+ and D^*-$ mesons. The production fraction of inclusive Ds^(*)+ and the corresponding momentum spectra have been determined. Exclusive decays B^0 --> D^*- Ds^(*)+ have been identified with a partial reconstruction technique and their branching ratios have been measured. Fully reconstructed B^0 decays in the hadronic modes B^0 --> D^*- pi+ andB^0 --> D^*- rho+ have been also studied and the measurement of their absolute branching fractions is reported.