Measurement of CP-Violating Asymmetries in B{sup 0}{yields}D{sup (*){+-}}D{sup {+-}}

Journal Article · Fri Aug 17 04:00:00 EDT 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.99.071801· OSTI ID:21028138

Aubert, B; Bona, M; Boutigny, D; Karyotakis, Y; Lees, J P; Poireau, V; Prudent, X; Tisserand, V; Zghiche, A ^[1]; Garra Tico, J; Grauges, E ^[2]; Lopez, L; Palano, A ^[3]; Eigen, G; Stugu, B; Sun, L ^[4]; Abrams, G S; Battaglia, M; Brown, D N; Button-Shafer, J ^[5]

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1. Laboratoire de Physique des Particules, IN2P3/CNRS et Universite de Savoie, F-74941 Annecy-Le-Vieux (France)
2. Facultat de Fisica, Departament ECM, Universitat de Barcelona, E-08028 Barcelona (Spain)
3. Dipartimento di Fisica and INFN, Universita di Bari, I-70126 Bari (Italy)
4. Institute of Physics, University of Bergen, N-5007 Bergen (Norway)
5. Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720 (United States)

We present updated measurements of CP-violating asymmetries in the decays B{sup 0}{yields}D*{sup {+-}}D{sup {+-}} and B{sup 0}{yields}D{sup +}D{sup -} using (383{+-}4)x10{sup 6}BB pairs collected by the BABAR detector at the SLAC PEP-II B factory. We determine the time-integrated CP asymmetry A{sub D*{sup {+-}}}{sub D{sup {+-}}}=0.12{+-}0.06{+-}0.02, and the time-dependent asymmetry parameters to be C{sub D*{sup +}}{sub D{sup -}}=0.18{+-}0.15{+-}0.04, S{sub D*{sup +}}{sub D{sup -}}=-0.79{+-}0.21{+-}0.06, C{sub D*{sup -}}{sub D{sup +}}=0.23{+-}0.15{+-}0.04, S{sub D*{sup -}}{sub D{sup +}}=-0.44{+-}0.22{+-}0.06, C{sub D{sup +}}{sub D{sup -}}=0.11{+-}0.22{+-}0.07, and S{sub D{sup +}}{sub D{sup -}}=-0.54{+-}0.34{+-}0.06, where the first uncertainty is statistical and the second is systematic.

• OSTI ID: 21028138
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 7 Vol. 99; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
B NEUTRAL MESONS
CP INVARIANCE
D MINUS MESONS
D PLUS MESONS
MESON FACTORIES
PAIR PRODUCTION
PARTICLE DECAY
STANFORD LINEAR ACCELERATOR CENTER
TIME DEPENDENCE