A Study of the Charmed Semileptonic Decays D^0 ->K^± e ν, D^0 ->±̂e ν, D^± ->K^0 e ν and D^± ->0̂e ν
Abstract
Using a sample of 1.8 million DD mesons collected at the ψ(3770) with the CLEO detector, and a reconstruction method based on the full event hermeticity, we measure branching fractions and branching fraction ratios for the four exclusive semileptonic decay modes D^0 ->K^± e ν, D^0 ->±̂e ν, D^± ->K^0 e ν and D^± ->0̂e ν. Form factors are measured using a fit to the branching fraction results in five q^2 bins. Three form factor models are explored, the simple pole model, the modified pole model and a series parameterization model. In addition we fit for the CKM matrix element |Vcs| and the ratio |Vcd|Vcs|.
- Publication:
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APS April Meeting Abstracts
- Pub Date:
- April 2006
- Bibcode:
- 2006APS..APRL12002A