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Determination of the D-0 -> K- pi(+) pi(0) and D-0 -> K- pi(+) pi(+) pi(-) coherence factors and average strong-phase differences using quantum-correlated measurements
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(2009) Determination of the D-0 -> K- pi(+) pi(0) and D-0 -> K- pi(+) pi(+) pi(-) coherence factors and average strong-phase differences using quantum-correlated measurements. Physical Review D (Particles, Fields, Gravitation and Cosmology), Vol.80 (No.3). article no. 031105 . doi:10.1103/PhysRevD.80.031105 Full text not available from this repository, contact author.
Official URL: http://dx.doi.org/10.1103/PhysRevD.80.031105
Abstract
The first measurements of the coherence factors (R-K pi pi 0 and R-K3 pi) and the average strong-phase differences((delta(K pi pi 0)(D) and delta(K3 pi)(D))) for D-0 -> K- pi(+) pi(0) and D-0 -> K- pi(+) pi(+) pi(-) are presented. These parameters can be used to improve the determination of the unitarity triangle angle gamma in B- -> DK- decays, where D is a D-0 or (D) over bar (0) meson decaying to the same final state. The measurements are made using quantum-correlated, fully reconstructed D-0(D) over bar (0) pairs produced in e(+)e(-) collisions at the psi(3770) resonance. The measured values are: R-K pi pi 0 = 0.84 +/- 0.07, delta(K pi pi 0)(D) = (227(-17)(+14))degrees, R-K3 pi = 0.33(-0.23)(+0.20), and delta(K3 pi)(D) = (114(-23)(+26))degrees. These results indicate significant coherence in the decay D-0 -> K- pi(+) pi(0), whereas lower coherence is observed in the decay D-0 -> K- pi(+) pi(+) pi(-). The analysis also results in a small improvement in the knowledge of other D-meson parameters, in particular, the strong-phase difference for D-0 -> K- pi(+), delta(K pi)(D), and the mixing parameter y.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
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| Divisions: | Faculty of Science > Physics | ||||
| Library of Congress Subject Headings (LCSH): | Mesons, Coherence (Nuclear physics), CP violation (Nuclear physics) | ||||
| Journal or Publication Title: | Physical Review D (Particles, Fields, Gravitation and Cosmology) | ||||
| Publisher: | American Physical Society | ||||
| ISSN: | 1550-7998 | ||||
| Official Date: | August 2009 | ||||
| Dates: |
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| Volume: | Vol.80 | ||||
| Number: | No.3 | ||||
| Number of Pages: | 7 | ||||
| Page Range: | article no. 031105 | ||||
| DOI: | 10.1103/PhysRevD.80.031105 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Funder: | A.P. Sloan Foundation, National Science Foundation (U.S.) (NSF), United States. Dept. of Energy, Natural Sciences and Engineering Research Council of Canada (NSERC), Science and Technology Facilities Council (Great Britain) (STFC) |
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