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Measurement of CP-violating asymmetries in B0→D(*)±D∓

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Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J. P., Poireau, V., Prudent, X., Tisserand, V., Zghiche, A., Tico, J. Garra et al.
(2007) Measurement of CP-violating asymmetries in B0→D(*)±D∓. Physical Review Letters, Vol.99 (No.7). Article: 071801. doi:10.1103/PhysRevLett.99.071801

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Abstract

We present updated measurements of CP-violating asymmetries in the decays B-0 ->(DD -/+)-D-*+/- and B-0 -> D+D- using (383 +/- 4) x 10(6)B (B) over bar 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 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.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Physics
Journal or Publication Title: Physical Review Letters
Publisher: American Physical Society
ISSN: 0031-9007
Official Date: 17 August 2007
Dates:
DateEvent
17 August 2007Published
Volume: Vol.99
Number: No.7
Number of Pages: 7
Page Range: Article: 071801
DOI: 10.1103/PhysRevLett.99.071801
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access

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