Mixing in the D-D system at BABAR
نویسنده
چکیده
We report a preliminary result for D-D mixing and the doubly Cabibbo suppressed decay rate RD based on an analysis of D 0 → Kπ decays from 57.1 fb of data collected at or just below the Υ (4S) resonance with the BABAR detector at the PEP-II collider. We set 95% confidence limits for the mixing parameters x 2 and y and find that our result is compatible with no mixing and no CP violation. In the limit of no mixing we find the doubly Cabibbo suppressed decay rate RD = (0.357 ± 0.022 (stat.) ± 0.027 (syst.))% and the CP violating asymmetry AD = 0.095± 0.061 (stat.)± 0.083 (syst.).
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