Showing papers by "D. Su published in 1996"
TL;DR: The first experimental study of the ratio of cumulant to factorial moments of the charged-particle multiplicity distribution in high-energy particle interactions, using hadronic Z0 decays collected by the SLD experiment at SLAC, was presented in this paper.
31 citations
TL;DR: In this article, the authors used 2D and 3D impact parameter tags and a displaced 3D vertex tag which all exploit the small size and stability of the e+e- interaction point and the precision 3D CCD pixel vertex detector to achieve high bb¯-tagging efficiencies and purities.
Abstract: We present measurements of Rb using the SLD at the SLC. The analyses use 2D and 3D impact parameter tags and a displaced 3D vertex tag which all exploit the small size and stability of the e+e- interaction point and the precision 3D CCD pixel vertex detector to achieve high bb¯-tagging efficiencies and purities. The combined measurement yields Rb=0.229±0.011 and is consistent with standard model predictions.
30 citations
TL;DR: In this article, the average charged multiplicities have been measured separately in b, c and light quark (u, d, s) events from Z0 decays measured in the SLD experiment.
14 citations
01 Jan 1996
TL;DR: In this paper, the lifetime of B+ and B0 mesons were measured using a sample of 150,000 hadronic Z0 decays collected by the SLD experiment at the SLC between 1993 and 1995.
Abstract: The lifetimes of B+ and B0 mesons have been measured using a sample of 150,000 hadronic Z0 decays collected by the SLD experiment at the SLC between 1993 and 1995. The analysis reconstructs the decay length and charge of the B meson using a novel topological vertexing technique. This method results in a high statistics sample of 6033 (3665) charged (neutral) vertices with good charge purity. A maximum likelihood fit procedure finds: t(B+) = 1.67 +/- 0.07(stat) +/- 0.06(syst) ps, t(B0) = 1.66 +/- 0.08(stat) +/- 0.08(syst) ps, t(B+)/t(B0) = 1.01 +0.09-0.08(stat) +/- 0.05(syst).
5 citations