Mixing and Tagger Performance in Semileptonic <i>B<i> Decays in the Two-Track Trigger Data Sample

Mixing and Tagger Performance in Semileptonic B Decays in the Two-Track Trigger Data Sample

This is the web page summarizing the blessed results of the B⁰ mixing analysis and tagger performance in semileptonic B decays in the Two-Track Trigger Data Sample. Those have been produced for PANIC05 (October 24-28 2005) as part of the CDF ongoing effort in a B_s mixing analysis. They have been blessed in the B Physics Meeting on Thursday September, 15th 2005.

The overall opposite side tagging performance measured on this sample is

&epsilon D² = 1.55 ą 0.08 ą 0.03 %.

and the B⁰ mixing frequency is

&Delta m_s = 0.511 ą 0.020 ą 0.014 ps^-1

Two similar analysis have already been performed using semileptonic B decays in the lepton + displaced track trigger. One analysis using a binned likelihood fitter and applying both OST and SST tagging algorithms(summer 04) and a second analysis using an unbinned likihood fitter applying OST only(winter 05). The new analysis includes several improvements which are described in detail in the public note below. Both former analysis have an overlap in events with the current analysis. Thus the results of those analysis can NOT be direclty combined.

A complete version of the new results can be found in the CDF note 7910.

Below are the eps versions of tables meant for downloads.

Below are the eps versions of figures meant for downloads.

Figure 1 Cross talk diagram

k factor distributions

Figure 2 B0 -> muon D (K pi) X, lepton SVT trigger
Figure 3 B0 -> muon D (K pi) X, lepton non-SVT trigger
Figure 4 B0 -> muon D(K pi pi) X, lepton SVT trigger
Figure 5 B0 -> muon D(K pi pi) X, lepton non-SVT trigger

Pseudo proper decay length efficiency curves

Figure 6 B0 -> muon D(K pi) X, lepton SVT trigger
Figure 7 B0 -> muon D(K pi) X, lepton non-SVT trigger
Figure 8 B0 -> muon D(K pi pi) X, lepton SVT trigger
Figure 9 B0 -> muon D(K pi pi) X, lepton non-SVT trigger

m(l,D) distributions

Figure 10 B0 -> muon D(K pi) X, lepton SVT trigger, Signal distribution
Figure 11 B0 -> muon D(K pi) X, lepton SVT trigger, Fake lepton distribution
Figure 12 B0 -> muon D(K pi) X, lepton SVT trigger, Phys. Background distribution
Figure 13 B0 -> muon D(K pi) X, lepton SVT trigger, Data distribution

D invariant mass data distributions and fit projections

Figure 14 muon D(K, pi) X, lepton SVT trigger
Figure 15 muon D(K, pi) X, lepton non-SVT trigger
Figure 16 electron D(K, pi) X, lepton SVT trigger
Figure 17 electron D(K, pi) X, lepton non-SVT trigger
Figure 18 muon D(K, pi, pi) X, lepton SVT trigger
Figure 19 muon D(K, pi, pi) X, lepton non-SVT trigger
Figure 20 electron D(K, pi, pi) X, lepton SVT trigger
Figure 21 electron D(K, pi, pi) X, lepton non-SVT trigger
Figure 22 muon D*(D(K, pi), pi) X, lepton SVT trigger
Figure 23 muon D*(D(K, pi), pi) X, lepton non-SVT rigger
Figure 24 electron D*(D(K, pi), pi) X, lepton SVT trigger
Figure 25 electron D*(D(K, pi), pi) X, lepton non-SVT trigger

B pseudo proper decay length distributions and fit projections

Figure 26 muon D(K, pi) X, lepton SVT trigger
Figure 27 muon D(K, pi) X, lepton non-SVT trigger
Figure 28 electron D(K, pi) X, lepton SVT trigger
Figure 29 electron D(K, pi) X, lepton non-SVT trigger
Figure 30 muon D(K, pi, pi) X, lepton SVT trigger
Figure 31 muon D(K, pi, pi) X, lepton non-SVT trigger
Figure 32 electron D(K, pi, pi) X, lepton SVT trigger
Figure 33 electron D(K, pi, pi) X, lepton non-SVT trigger
Figure 34 muon D*(D(K, pi), pi) X, lepton SVT trigger
Figure 35 muon D*(D(K, pi), pi) X, lepton non-SVT trigger
Figure 36 electron D*(D(K, pi), pi) X, lepton SVT trigger
Figure 37 electron D*(D(K, pi), pi) X, lepton non-SVT trigger

Asymmetry distributions and fit projections for common fit to all modes

Figure 38 Soft Muon Tagger eps , jpg
Figure 39 Soft Electron Tagger eps, jpg
Figure 40 Jet Charge Tagger (JVX) eps , jpg
Figure 41 Jet Charge Tagger (JJP) eps , jpg
Figure 42 Jet Charge Tagger (JPT) eps , jpg

Figure 43 Soft Lepton Tagger eps , jpg