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A Search for the Rare Decay B0 --> D_S+ rho-

The BABAR Collaboration·B. Aubert
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Abstract

We report on a search for the decay B0 --> D_S+ rho- in a sample of 90 million Y(4S) decays into B meson pairs collected between 1999 and 2001 with the BaBar detector at the PEP-II asymmetric-energy e+e- collider. No significant excess of signal events above the expected background is observed. We set a 90% C.L. limit on the branching fraction Br(B0 --> D_S+ rho-)< 1.9*10^{-5}. Assuming a flavor SU(3) symmetry relation between the decays B0 --> D_S+ rho- and B0 --> D+ rho-, we set a limit on the ratio of CKM-suppressed to CKM-favored amplitudes r(D rho)<9.5*10^{-3} at 90% C.L. All results are preliminary.

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The BABAR Collaboration, B. Aubert. 2004-08-11. A Search for the Rare Decay B0 --> D_S+ rho-. https://arxiv.org/abs/hep-ex/0408029

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