We report the measurement of the branching fractions of the rare decays B0→Ds(*)+π-, B0→Ds(*)+ρ-, and B0→Ds(*)- K(*)+ in a sample of 381×106Υ(4S) decays into BB̄ pairs collected with the BA?B?AR? detector at the PEP-II asymmetric-energy e+e- storage ring. We present evidence for the decay B0→Ds-K*+ and the vector-vector decays B0→Ds*+ρ- and B0→Ds*-K*+, as well as the first measurement of the vector meson polarization in these decays. We also determine the ratios of the CKM-suppressed to CKM-favored amplitudes r(D(*)π) and r(D(*)ρ) in decays B0→D(*)±π and B0→D(*)±ρ, and comment on the prospects for measuring the CP observable sin (2β+γ).

Aubert, B., Bona, M., Karyotakis, Y., Lees, J., Poireau, V., Prencipe, E., et al. (2008). Measurement of the branching fractions of the rare decays B0→Ds(*)+π-, B0→Ds(*)+ρ-, and B0→Ds(*)- K(*)+. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 78(3) [10.1103/PhysRevD.78.032005].

Measurement of the branching fractions of the rare decays B0→Ds(*)+π-, B0→Ds(*)+ρ-, and B0→Ds(*)- K(*)+

CARPINELLI, Massimo;
2008

Abstract

We report the measurement of the branching fractions of the rare decays B0→Ds(*)+π-, B0→Ds(*)+ρ-, and B0→Ds(*)- K(*)+ in a sample of 381×106Υ(4S) decays into BB̄ pairs collected with the BA?B?AR? detector at the PEP-II asymmetric-energy e+e- storage ring. We present evidence for the decay B0→Ds-K*+ and the vector-vector decays B0→Ds*+ρ- and B0→Ds*-K*+, as well as the first measurement of the vector meson polarization in these decays. We also determine the ratios of the CKM-suppressed to CKM-favored amplitudes r(D(*)π) and r(D(*)ρ) in decays B0→D(*)±π and B0→D(*)±ρ, and comment on the prospects for measuring the CP observable sin (2β+γ).
Articolo in rivista - Articolo scientifico
BABAR detector
English
2008
B. Aubert et al. (BABAR Collaboration)
Aubert, B., Bona, M., Karyotakis, Y., Lees, J., Poireau, V., Prencipe, E., et al. (2008). Measurement of the branching fractions of the rare decays B0→Ds(*)+π-, B0→Ds(*)+ρ-, and B0→Ds(*)- K(*)+. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 78(3) [10.1103/PhysRevD.78.032005].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389610
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