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New determination of the D0→K -π +π0 and D0→K -π +π +π - coherence factors and average strong-phase d
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Libby, J. (James), Malde, Sneha, Powell, A. (Andrew), Wilkinson, G. (Guy), Asner, D. M., Bonvicini, G., Briere, R. A. (Roy A.), Gershon, T. J., Naik, P. (Paras), Pedlar, T. K., Rademacker, Jonas, Ricciardi, S. and Thomas, C. (Christopher) (2014) New determination of the D0→K -π +π0 and D0→K -π +π +π - coherence factors and average strong-phase d. Physics Letters B, Volume 731 . pp. 197-203. doi:10.1016/j.physletb.2014.02.032
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Official URL: http://dx.doi.org/10.1016/j.physletb.2014.02.032
Abstract
Measurements of the coherence factors (RKππ0 and R K3π) and the average strong-phase differences (δDKππ0 and δDK3π) for the decays D0→K -π +π0 and D0→K -π +π +π - are presented. These parameters are important inputs to the determination of the unitarity triangle angle γ in B ∓→DK ∓ decays, where D designates a D0 or D-0 meson decaying to a common final state. The measurements are made using quantum correlated DD- decays collected by the CLEO-c experiment at the ψ(3770) resonance, and augment a previously published analysis by the inclusion of new events in which the signal decay is tagged by the mode D→KS0π+π- The measurements also benefit from improved knowledge of external inputs, namely the D0D-0 mixing parameters, rDKπ and several D-meson branching fractions. The measured values are RKππ0=0.82±0.07, δDKππ0=(164-14+20)°, RK3π=0.32-0.28+0.20 and δDK3π=(225-78+21)°. Consideration is given to how these measurements can be improved further by using the larger quantum-correlated data set collected by BESIII.
| Item Type: | Journal Article | ||||||||||
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| Subjects: | Q Science > QC Physics | ||||||||||
| Divisions: | Faculty of Science > Physics | ||||||||||
| Library of Congress Subject Headings (LCSH): | CP violation (Nuclear physics), Particles (Nuclear physics) -- Charm | ||||||||||
| Journal or Publication Title: | Physics Letters B | ||||||||||
| Publisher: | Elsevier Science BV | ||||||||||
| ISSN: | 0370-2693 | ||||||||||
| Official Date: | 4 April 2014 | ||||||||||
| Dates: |
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| Volume: | Volume 731 | ||||||||||
| Page Range: | pp. 197-203 | ||||||||||
| DOI: | 10.1016/j.physletb.2014.02.032 | ||||||||||
| Status: | Peer Reviewed | ||||||||||
| Publication Status: | Published | ||||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||||
| Funder: | Science and Technology Facilities Council (Great Britain) (STFC) |
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