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A measurement of R{sub c} using the SLD detector

Conference ·
OSTI ID:291054
The authors report a new measurement of R{sub c} using data obtained with the SLD detector in 1993--1997. This measurement uses a double 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 detectors and the small and stable SLC beams to obtain a high c-tagging efficiency and purity of 15% and 69%, respectively. They obtain a preliminary 93--97 result of R{sub c} = 0.1794 {+-} 0.0085{sub stat.} {+-} 0.0061{sub syst.}.
Research Organization:
Stanford Univ., Stanford Linear Accelerator Center, CA (US)
Sponsoring Organization:
USDOE Office of Energy Research, Washington, DC (US)
DOE Contract Number:
AC03-76SF00515
OSTI ID:
291054
Report Number(s):
SLAC-PUB--7880; CONF-980748--; ON: DE98059252
Country of Publication:
United States
Language:
English

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