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
78
3
032005
none
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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