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Measurement of CP-violating asymmetries in B0-->D*(+/-)D(-/+) |
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| Authors: | Aubert B Bona M Boutigny D Karyotakis Y Lees J P Poireau V Prudent X Tisserand V Zghiche A Garra Tico J Grauges E Lopez L Palano A Eigen G Stugu B Sun L Abrams G S Battaglia M Brown D N Button-Shafer J Cahn R N Groysman Y Jacobsen R G Kadyk J A Kerth L T Kolomensky Yu G Kukartsev G Lopes Pegna D Lynch G Mir L M Orimoto T J Ronan M T Tackmann K Wenzel W A del Amo Sanchez P Hawkes C M Watson A T Held T Koch H Lewandowski B Pelizaeus M Schroeder T Steinke M Walker D Asgeirsson D J Cuhadar-Donszelmann T Fulsom B G Hearty C Mattison T S McKenna J A Khan A Saleem M Teodorescu L Blinov V E Bukin A D |
| Affiliation: | Laboratoire de Physique des Particules, IN2P3/CNRS et Université de Savoie, F-74941 Annecy-Le-Vieux, France. |
| 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. |
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