Search for D{sup 0}-{bar D}{sup 0} Mixing and a Measurement of the Doubly Cabibbo-suppressed Decay Rate in D{sup 0} {yields} K{pi} Decays
We present results of a search for D{sup 0}-{bar D}{sup 0} mixing and a measurement of R{sub D}, the ratio of doubly Cabibbo-suppressed decays to Cabibbo-favored decays, based on an analysis of D{sup 0} {yields} K{sup +}{pi}{sup -} decays in 57.1 fb{sup -1} of data collected at or just below the {Upsilon}(4S) resonance with the BABAR detector at the PEP-II collider. Our results are compatible with no mixing and no CP violation. At the 95% confidence level, allowing for CP violation, we find the mixing parameters x{prime}{sup 2} < 0.0022 and -0.056 < y{prime} < 0.039, and the mixing rate R{sub M} < 0.16%. In the limit of no mixing, R{sub D} = (0.357 {+-} 0.022 (stat.) {+-} 0.027 (syst.))% and the CP-violating asymmetry A{sub D} = 0.095 {+-} 0.061 (stat.) {+-} 0.083 (syst.).
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (US)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 812992
- Report Number(s):
- SLAC-PUB-9685; TRN: US0303555
- Resource Relation:
- Other Information: PBD: 4 Apr 2003
- Country of Publication:
- United States
- Language:
- English
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