We report the measurement of the branching fractions of the rare decays B(0)-> D(s)((*)+)pi(-), B(0)-> D(s)((*)+)rho(-), and B(0)-> D(s)((*)-)K((*)+) in a sample of 381x10(6)Upsilon(4S) decays into B (B) over bar pairs collected with the BABAR detector at the PEP-II asymmetric-energy e(+)e(-) storage ring. We present evidence for the decay B(0)-> D(s)(-)K(*+) and the vector-vector decays B(0)-> D(s)(*+)rho(-) and B(0)-> D(s)(*-)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((*))pi) and r(D((*))rho) in decays B(0)-> D((*)+/-)pi(-/+) and B(0)-> D((*)+/-)rho(-/+), and comment on the prospects for measuring the CP observable sin(2 beta+gamma).

Measurement of the branching fractions of the rare decays B(0)-> D(s)((*)+)pi(-), B(0)-> D(s)((*)+)rho(-), and B(0)-> D(s)((*)-)K((*)+) RID C-5223-2009

LUSIANI, Alberto;
2008

Abstract

We report the measurement of the branching fractions of the rare decays B(0)-> D(s)((*)+)pi(-), B(0)-> D(s)((*)+)rho(-), and B(0)-> D(s)((*)-)K((*)+) in a sample of 381x10(6)Upsilon(4S) decays into B (B) over bar pairs collected with the BABAR detector at the PEP-II asymmetric-energy e(+)e(-) storage ring. We present evidence for the decay B(0)-> D(s)(-)K(*+) and the vector-vector decays B(0)-> D(s)(*+)rho(-) and B(0)-> D(s)(*-)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((*))pi) and r(D((*))rho) in decays B(0)-> D((*)+/-)pi(-/+) and B(0)-> D((*)+/-)rho(-/+), and comment on the prospects for measuring the CP observable sin(2 beta+gamma).
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11384/6862
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