Measurement of the doubly Cabibbo suppressed decay D⁰→ K⁺π^- and a search for charm mixing

Authors

J. M. Link, University of California, DavisFollow
P. M. Yager, University of California, DavisFollow
J. C. Anjos, Centro Brasileiro de Pesquisas FísicasFollow
I. Bediaga, Centro Brasileiro de Pesquisas FísicasFollow
C. Göbel, Centro Brasileiro de Pesquisas FísicasFollow
A. A. MacHado, Centro Brasileiro de Pesquisas FísicasFollow
J. Magnin, Centro Brasileiro de Pesquisas FísicasFollow
A. Massafferri, Centro Brasileiro de Pesquisas FísicasFollow
Abaz Kryemadhi, Messiah UniversityFollow
I. M. Ahsan, Kansas State UniversityFollow

Document Type

Article

Publication Date

7-7-2005

Abstract

We present an analysis of the decay D0→K+π- based on FOCUS data. From a sample of 234 signal events, we find a branching ratio of Γ(D0→K+π-)Γ(D0→K-π+)=(0.429-0.061+0.063±0. 027)% under the assumptions of no mixing and no CP violation. Allowing for CP violation, we find a branching ratio of (0.429±0.063±0.028)% and a CP asymmetry of 0.18±0.14±0.04. The branching ratio for the case of mixing with no CP violation is (0.381-0.163+0.167±0.092)%. We also present limits on charm mixing. © 2005 Elsevier B.V. All rights reserved.

Recommended Citation

Link, J. M.; Yager, P. M.; Anjos, J. C.; Bediaga, I.; Göbel, C.; MacHado, A. A.; Magnin, J.; Massafferri, A.; Kryemadhi, Abaz; and Ahsan, I. M., "Measurement of the doubly Cabibbo suppressed decay D⁰→ K⁺π^- and a search for charm mixing" (2005). Educator Scholarship & Departmental Newsletters. 198.
https://mosaic.messiah.edu/mps_ed/198