Aubert, B. et al. (2007) Measurement of CP-Violating Asymmetries in B0→D(*)±D∓. Physical Review Letters, 99 (7). 071801. ISSN 0031-9007
Abstract

We present updated measurements of CP-violating asymmetries in the decays B0→D*±D∓ and B0→D+D- using (383±4)×106BB̅ pairs collected by the BABAR detector at the SLAC PEP-II B factory. We determine the time-integrated CP asymmetry AD*±D∓=0.12±0.06±0.02, and the time-dependent asymmetry parameters to be CD*+D-=0.18±0.15±0.04, SD*+D-=-0.79±0.21±0.06, CD*-D+=0.23±0.15±0.04, SD*-D+=-0.44±0.22±0.06, CD+D-=0.11±0.22±0.07, and SD+D-=-0.54±0.34±0.06, where the first uncertainty is statistical and the second is systematic.

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