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An Updated Measurement of Sin (2[Beta] at CDF.

An Updated Measurement of Sin (2[Beta] at CDF. PDF Author:
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We report an updated direct measurement of the Standard Model CP violation parameter sin(2[beta]) using the CDF Detector at Fermilab. We use the entire Run-I data sample of 110 pb[sup -1] of proton-antiproton collisions at[radical]s= 1.8 TeV. In this analysis, we have combined three tagging methods: a same-side tag, a soft-lepton tag, and a jet-charge tag, and also added events that have less precise lifetime information because they are not fully contained within the acceptance of the SVX. The signal sample consists of[approx] 400 B[yields] J/[psi] K[sub S][sup 0] events. A maximum likelihood fitting method is used to measure sin(2[beta])= 0.79[sub -0.44][sup+0.41] (stat.+syst.). We calculate a 93% Feldman-Cousins confidence interval of 0
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