! ! Combine All SLD Ab measurements (Summer/04 final) ! ! Lepton: 93-95 PRL ! 96-98 Giulia and Jorge's thesis ! Jet-Q: 93-95 PRL + 96-98 R17 ! Kaon: 94-95 PRL ! VTX-Q: 96-98 Final analysis as in Tom's thesis ! ! Statistical correlation between analysis: ! A formal tests using individual analysis event by event weights ! based on Winter-98 data. The correct for actual analysis data ! periods not quite same: ! Win-98 data actual analysis data periods ! ----------- ----------------------------- ! JetQ vs Lepton 22.1 22.1 (~100% overlap) ! JetQ vs Vtx+K 34.3 32.0 (87%) ! JetQ vs Ktag 23.1 8.3 (13%) ! Lepton vs Vtx+K 15.9 14.5 (83%) ! Lepton vs Ktag 10.4 4.3 (17%) ! Vtx-Q vs Ktag 0 0 (93-5 separate from 96-98) ! ! The corrections are based on JetQ 93-5,96-98 wt=13/87 ! Lept 93-5,96-98 wt=17/83 ! Ktag 94-5 only wt=100/0 ! Vtx-Q 96-98 only wt=0/100 ! Corr-coef correct ~ sqrt(data period overlap weight fraction)*Corr0 ! Sep/04: rescaled to final LEPEWWG parameters and used our own ! combined Ac error. ! ! ! Average Lepton Jet-Q K-tag Vtx-Q Measurement values 0.9170 0.9380 0.9067 0.8550 0.9173 Statistical correlation Matrix 1.0000 0.2210 0.0430 0.1450 0.2210 1.0000 0.0830 0.3200 0.0430 0.0830 1.0000 0.0000 0.1450 0.3200 0.0000 1.0000 Data Statistics 0.0147 0.0296 0.0197 0.0877 0.0184 MC statistics 0.0016 0.0000 0.0000 0.0026 0.0031 ML weights 0.0006 0.0032 0.0000 0.0000 0.0000 Self-calib statistics 0.0078 0.0000 0.0135 0.0000 0.0130 Tracking inefficiency 0.0048 0.0048 0.0079 0.0060 0.0031 Tracking resolution 0.0002 0.0000 0.0000 0.0000 0.0004 K-tag detector effect 0.0001 0.0000 0.0000 0.0092 0.0000 Jet axis smearing 0.0013 0.0071 0.0000 0.0000 0.0000 mu background level 0.0005 0.0029 0.0000 0.0000 0.0000 e background level 0.0004 0.0025 0.0000 0.0000 0.0000 mu background asymmetry 0.0002 0.0014 0.0000 0.0000 0.0000 e background asymmetry 0.0002 0.0014 0.0000 0.0000 0.0000 Neural Net Training 0.0008 0.0044 0.0000 0.0000 0.0000 Jet-Q calibration syst. 0.0045 0.0000 0.0156 0.0000 0.0000 Vtx-Q calibration syst. 0.0033 0.0000 0.0000 0.0000 0.0064 b-tag purity 0.0062 0.0092 0.0054 0.0009 0.0058 L/D weights 0.0002 0.0012 0.0000 0.0000 0.0000 K-tag phys. sys. 0.0015 0.0000 0.0000 0.0975 0.0000 BR(b->l) 0.0007 0.0040 0.0000 0.0000 0.0000 BR(b->c->l) 0.0004 0.0021 0.0000 0.0000 0.0000 BR(b->cbar->l-) 0.0006 0.0036 0.0000 0.0000 0.0000 BR(b->tau->l) 0.0002 0.0013 0.0000 0.0000 0.0000 BR(b->J/psi->l+l-) 0.0001 0.0008 0.0000 0.0000 0.0000 BR(c->l) 0.0002 0.0012 0.0000 0.0000 0.0000 B mixing 0.0017 0.0097 0.0000 0.0000 0.0000 B-> D** l nu frac 0.0006 0.0034 0.0000 0.0000 0.0000 D->l spectrum 0.0009 0.0049 0.0000 0.0000 0.0000 B->DDX 0.0013 0.0076 0.0000 0.0000 0.0000 B->D0/D+ 0.0002 0.0012 0.0000 0.0000 0.0000 Bs fraction 0.0008 0.0034 0.0000 0.0154 0.0000 Lambda b fraction 0.0007 0.0026 0.0000 0.0162 0.0000 b frag xEb 0.0003 0.0013 0.0000 0.0060 0.0000 c frag xEc 0.0005 0.0028 0.0000 0.0000 0.0000 b frag shape 0.0005 0.0019 0.0000 0.0128 0.0000 g->bb 0.0007 0.0015 0.0010 0.0014 0.0002 g->cc 0.0001 0.0002 0.0000 0.0000 0.0001 Polarization 0.0048 0.0052 0.0049 0.0060 0.0046 QCD correction 0.0035 0.0048 0.0033 0.0026 0.0032 BR(Z->b bbar) 0.0012 0.0004 0.0000 0.0001 0.0022 BR(Z->c cbar) 0.0004 0.0006 0.0000 0.0002 0.0006 Ac variation 0.0008 0.0022 0.0009 -0.0006 0.0004 ** Total error 0.0206 0.0374 0.0307 0.1344 0.0253 ** Systematic error sum 0.0145 0.0229 0.0235 0.1019 0.0173 Weight fraction 1.0000 0.1774 0.2857 0.0150 0.5218 Combined result = 0.9170+- 0.0147+- 0.0145