This is the web page summarizing the results of the B⁰ mixing analysis and tagger performance in semileptonic B decays with ~1fb-1 data Sample. These results have been produced for FPCP2006 conference as a part of the CDF ongoing effort in the B_s mixing analysis. 

The overall opposite side tagging performance measured on this sample is:

ε D² = 1.54 ± 0.05 %

The B⁰ mixing frequency is:

Δ m_d = 0.509 ± 0.010 ± 0.016 ps^-1

This analysis is described in CDF note 8235.

The new analysis supersedes previous analyzes applying opposite-side taggers. One analysis using a binned likelihood fitter and applying both OST and SST tagging algorithms was performed in summer 04. A second analysis involving expanded data sets and improved techniques was performed in October 05.

Below are the eps versions of tables meant for downloads.

• Table   1   Selection cuts
• Table   2   Signal yields
• Table   3   Systematic uncertainties
• Table   4   Dilution scale factors

Below are the eps versions of figures meant for downloads.

m(l,D) distributions

• B -> lepton D X, lepton SVT trigger
• B -> lepton D X, lepton non-SVT trigger
• B -> lepton D X, all modes

D invariant mass data distributions and fit projections


• B -> lepton D X, lepton SVT trigger
• B -> lepton D X, lepton non-SVT trigger
• B -> lepton D X, all modes

B pseudo proper decay length distributions and fit projections


• B -> lepton D X, lepton SVT trigger
• B -> lepton D X, lepton non-SVT trigger
• B -> lepton D X, all modes

Asymmetry distributions and fit projections for common fit to all modes

• Soft Muon Tagger
• Soft Electron Tagger
• Jet Charge Tagger (SVX)
• Jet Charge Tagger (JJP)
• Jet Charge Tagger (JPT)