2004/08/11 by The BABAR Collaboration, B. Aubert, Aubert, B.
Engineering · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Particle Accelerators and Free-Electron Lasers #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.48550/arxiv.hep-ex/0408029
16 pages, 8 postscript figues, submitted to ICHEP2004
arxiv created 2004/08/11 · openalex publication_date 2004/08/11 · arxiv updated 2009/12/01 · openalex created_date 2024/04/10 · openalex updated_date 2026/07/28
We report on a search for the decay B0 --> DS+ 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 --> DS+ rho-)< 1.9*10-5. Assuming a flavor SU(3) symmetry relation between the decays B0 --> DS+ 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.