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Determination of the D0→K-π+π0 and D0→K-π+π+π- coherence factors and average strong-phase differences using quantum-correlated measurements
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CLEO Collaboration (Including:
). (2009) Determination of the D0→K-π+π0 and D0→K-π+π+π- coherence factors and average strong-phase differences using quantum-correlated measurements. Physical Review D (Particles, Fields, Gravitation and Cosmology), Volume 80 (Number 3). Article Number 031105(R) . doi:10.1103/PhysRevD.80.031105 ISSN 1550-7998.Research output not available from this repository.
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Official URL: http://dx.doi.org/10.1103/PhysRevD.80.031105
Abstract
The first measurements of the coherence factors (RKππ0 and RK3π) and the average strong-phase differences (δKππ0D and δK3πD) for D0→K−π+π0 and D0→K−π+π+π− are presented. These parameters can be used to improve the determination of the unitarity triangle angle γ in B−→DK− decays, where D is a D0 or D¯¯¯0 meson decaying to the same final state. The measurements are made using quantum-correlated, fully reconstructed D0D¯¯¯0 pairs produced in e+e− collisions at the ψ(3770) resonance. The measured values are: RKππ0=0.84±0.07, δKππ0D=(227+14−17)°, RK3π=0.33+0.20−0.23, and δK3πD=(114+26−23)°. These results indicate significant coherence in the decay D0→K−π+π0, whereas lower coherence is observed in the decay D0→K−π+π+π−. The analysis also results in a small improvement in the knowledge of other D-meson parameters, in particular, the strong-phase difference for D0→K−π+, δKπD, and the mixing parameter y.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
| Journal or Publication Title: | Physical Review D (Particles, Fields, Gravitation and Cosmology) | ||||
| Publisher: | American Physical Society | ||||
| ISSN: | 1550-7998 | ||||
| Official Date: | 2009 | ||||
| Dates: |
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| Volume: | Volume 80 | ||||
| Number: | Number 3 | ||||
| Article Number: | Article Number 031105(R) | ||||
| DOI: | 10.1103/PhysRevD.80.031105 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access |
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