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Measurement of ratios of branching fractions and CP-violating asymmetries of B-+/- -> D*K-+/- decays
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BaBar Collaboration (Including:
). (2008) Measurement of ratios of branching fractions and CP-violating asymmetries of B-+/- -> D*K-+/- decays. Physical Review D (Particles, Fields, Gravitation and Cosmology), Vol.78 (No.9). article no.092002. ISSN 1550-7998 Full text not available from this repository.
Official URL: http://dx.doi.org/10.1103/PhysRevD.78.092002
Abstract
We report a study of B-+/- -> D*K-+/- decays with D* decaying to D pi(0) or D gamma, using 383 x 10(6) B (B) over bar pairs collected at the Y(4S) resonance with the BABAR detector at the SLAC PEP-II B Factory. The D meson decays under study include a non-CP mode (K-+/- pi(-/+)), CP-even modes ((KK -/+)-K-+/-, pi(+/-)pi(-/+)), and CP-odd modes (K-s(0)pi(0), K-s(0)phi, K-s(0)omega).We measure ratios (R*(CP +/-)) of branching fractions of decays to CP eigenmode states and to flavor-specific states as well as CP asymmetries (A*(CP +/-)) These measurements are sensitive to the unitarity triangle angle gamma. We obtain A*(CP+) = -0.11 +/- 0.09 +/- 0.01, R*(CP) = 1.31 +/- 0.13 +/- 0.04, and A*(CP-) = 0.06 +/- 0.10 +/- 0.02, R-CP-(*) = 1.10 +/- 0.12 +/- 0.04, where the first error is statistical and the second error is systematic. Translating our results into an alternative parametrization, widely used for related measurements, we obtain x(+)* = 0. 11 +/- 0.06 +/- 0.02 and x(-)* = 0.00 +/- 0.06 +/- 0.02. No significant CP-violating charge asymmetry is found in either the flavor-specific mode D -> K-+/- pi(-/+) or in B-+/- -> D*pi(+/-) decays.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
| Divisions: | Faculty of Science > Physics |
| Journal or Publication Title: | Physical Review D (Particles, Fields, Gravitation and Cosmology) |
| Publisher: | American Physical Society |
| ISSN: | 1550-7998 |
| Date: | November 2008 |
| Volume: | Vol.78 |
| Number: | No.9 |
| Number of Pages: | 13 |
| Page Range: | article no.092002 |
| Identification Number: | 10.1103/PhysRevD.78.092002 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| URI: | http://wrap.warwick.ac.uk/id/eprint/28896 |
Data sourced from Thomson Reuters' Web of Knowledge
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