2002/11/30 by The Belle Collaboration, A. Satpathy, R. Abe +95 · 1 citation
Medicine · Physics and Astronomy · #Medical Imaging Techniques and Applications #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.1016/s0370-2693(02)03198-2
published as Phys.Lett.B553:159-166,2003 · 13 pages, LaTex, 4 figures, submitted to Phys. Lett. B
arxiv created 2002/12/17 · openalex publication_date 2003/01/21 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We report on a study of B 0 →D (∗)0 π + π − decays using 29.1 fb −1 of e + e − annihilation data recorded at the ϒ(4 S ) resonance with the Belle detector at the KEKB storage ring. Making no assumptions about the intermediate mechanism, the branching fractions for B 0 →D 0 π + π − and B 0 →D ∗0 π + π − are determined to be (8.0±0.6±1.5)×10 −4 and (6.2±1.2±1.8)×10 −4 , respectively. An analysis of B 0 →D 0 π + π − candidates yields to the first observation of the color-suppressed hadronic decay B 0 →D 0 ρ 0 with the branching fraction (2.9±1.0±0.4)×10 −4 . We measure the ratio of branching fractions B ( B 0 →D 0 ρ 0 )/ B ( B 0 →D 0 ω)=1.6±0.8 .