!
! Combine All SLD Ab measurements (Version for Winter 2001) 
!
! Lepton: 93-95 PRL 
!         96-98 Giulia and Jorge's thesis
! Jet-Q:  93-95 PRL + 96-98  R17
! Kaon:   94-95 PRL     
! VTX+K:  96-98 R17 analysis     
!
! 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+K  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+K 96-98 only wt=0/100 
! Corr-coef correct ~ sqrt(data period overlap weight fraction)*Corr0
!                                                        
 Nmeas, Nuncorr    4    4   Average  Lepton   Jet-Q   K-tag   Vtx+K  
 Measurement values         0.9115   0.9191  0.9067  0.8550  0.9126
 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            0.0149   0.0296  0.0197  0.0877  0.0189
 MC statistics              0.0017   0.0000  0.0000  0.0026  0.0034
 ML weights                 0.0006   0.0032  0.0000  0.0000  0.0000
 Self-calib statistics      0.0077   0.0000  0.0135  0.0000  0.0130
 Tracking inefficiency      0.0042   0.0048  0.0079  0.0060  0.0016
 Vtx Q detector effect      0.0017   0.0000  0.0000  0.0000  0.0035
 K-tag detector effect      0.0004   0.0000  0.0000  0.0092  0.0007
 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        0.0005   0.0025  0.0000  0.0000  0.0000
 mu background asymmetry    0.0003   0.0014  0.0000  0.0000  0.0000
 e  background asymmetry    0.0003   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.    0.0049   0.0000  0.0156  0.0000  0.0000
 Vtx-Q calibration syst.    0.0038   0.0000  0.0000  0.0000  0.0077
 b-tag purity               0.0064   0.0092  0.0054  0.0009  0.0060
 L/D weights                0.0002   0.0012  0.0000  0.0000  0.0000
 K-tag phys. sys.           0.0022   0.0000  0.0000  0.0975  0.0028
 BR(b->l)                   0.0006   0.0032  0.0000  0.0000  0.0000
 BR(b->c->l)                0.0006   0.0030  0.0000  0.0000  0.0000
 BR(b->cbar->l-)            0.0007   0.0036  0.0000  0.0000  0.0000
 BR(b->tau->l)              0.0003   0.0018  0.0000  0.0000  0.0000
 BR(b->J/psi->l+l-)         0.0005   0.0026  0.0000  0.0000  0.0000
 BR(c->l)                   0.0002   0.0012  0.0000  0.0000  0.0000
 B mixing                   0.0020   0.0107  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                     0.0014   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          0.0006   0.0026  0.0000  0.0162  0.0000
 b frag xEb                 0.0007   0.0013  0.0000  0.0060  0.0009
 c frag xEc                 0.0006   0.0028  0.0000  0.0000  0.0002
 b frag shape               0.0005   0.0019  0.0000  0.0128  0.0000
 g->bb                      0.0007   0.0008  0.0012  0.0017  0.0003
 g->cc                      0.0002   0.0002  0.0000  0.0000  0.0003
 Polarization               0.0049   0.0052  0.0049  0.0060  0.0048
 QCD correction             0.0035   0.0050  0.0033  0.0026  0.0031
 BR(Z->b bbar)              0.0009   0.0004  0.0000  0.0001  0.0017
 BR(Z->c cbar)              0.0004   0.0007  0.0000  0.0002  0.0006
 Ac variation               0.0011   0.0028  0.0011 -0.0006  0.0004
 ** Total error             0.0210   0.0378  0.0307  0.1344  0.0263
 ** Systematic error sum    0.0148   0.0235  0.0236  0.1019  0.0183
 Weight fraction            1.0000   0.1854  0.3117  0.0079  0.4950

 Combined result =  0.9115+- 0.0149+- 0.0148

