Measurement of CP-Violating Asymmetries in B0 -> D(*)+- D-+

B Aubert, Pablo Del Amo Sanchez, Christopher Hawkes, Alan Watson

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Abstract

We present updated measurements of CP-violating asymmetries in the decays B0-->D*(+/-)D(-/+) and B0-->D+D- using (383+/-4) x 10(6)B(B) pairs collected by the BABAR detector at the SLAC PEP-II B factory. We determine the time-integrated CP asymmetry A(D*(+/-)D(-/+))=0.12+/-0.06+/-0.02, and the time-dependent asymmetry parameters to be C(D*+D-)=0.18+/-0.15+/-0.04, S(D*+D-)=-0.79+/-0.21+/-0.06, C(D*-D+)=0.23+/-0.15+/-0.04, S(D*-D+)=-0.44+/-0.22+/-0.06, C(D+D-)=0.11+/-0.22+/-0.07, and S(D+D-)=-0.54+/-0.34+/-0.06, where the first uncertainty is statistical and the second is systematic.
Original languageEnglish
Pages (from-to)071801
Number of pages1
JournalPhysical Review Letters
Volume99
Early online date1 Aug 2007
DOIs
Publication statusPublished - 1 Aug 2007

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