M ay 2 00 5 Measurement of the doubly Cabibbo suppressed decay D 0 → K + π − and a search for charm mixing The FOCUS Collaboration
نویسندگان
چکیده
We present an analysis of the decayD0→K+π− based on FOCUS data. From a sample of 234 signal events, we find a branching ratio of Γ(D →Kπ) Γ(D0→K−π+) = (0.429 − 0.061 ± 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 0.167 − 0.163 ± 0.092)%. We also present limits on charm mixing.
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