A Preliminary Inclusive Measurement of Ac Using the SLD Detector
- SLAC
We report a new measurement of A{sub c} using data obtained by SLD in 1993-1995. This measurement uses a vertex tag technique, where the selection of a c hemisphere is based on the reconstructed mass of the charm hadron decay vertex. The method uses the 3D vertexing capabilities of SLD's CCD vertex detector and the small and stable SLC beams to obtain a high hemisphere c-tagging efficiency and purity of 13% and 69%, respectively. Charged kaons identified by the CRID detector and the charge of the reconstructed vertex provide an efficient quark-antiquark tag. We obtain a preliminary 93-95 result of A{sub c} = 0.662 {+-} 0.068 {+-} 0.042.
- Research Organization:
- Stanford Linear Accelerator Center, Menlo Park, CA (US)
- Sponsoring Organization:
- USDOE Office of Science (US)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 826628
- Report Number(s):
- SLAC-PUB-7595
- Country of Publication:
- United States
- Language:
- English
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