!
! Combine All SLD Ab measurements (Summer 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-Q:  96-98 R17 analysis (summer-01 reverted to Vtx-Q only)     
!
! 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
!                              
 Nmeas, Nuncorr    4    4   Average  Lepton   Jet-Q   K-tag   Vtx-Q  
 Measurement values         0.9163   0.9242  0.9067  0.8550  0.9208
 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      0.0079   0.0000  0.0135  0.0000  0.0133
 Tracking inefficiency      0.0044   0.0048  0.0079  0.0060  0.0021
 Vtx Q detector effect      0.0008   0.0000  0.0000  0.0000  0.0016
 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    0.0003   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.    0.0047   0.0000  0.0156  0.0000  0.0000
 Vtx-Q calibration syst.    0.0034   0.0000  0.0000  0.0000  0.0068
 b-tag purity               0.0067   0.0092  0.0054  0.0009  0.0068
 L/D weights                0.0002   0.0012  0.0000  0.0000  0.0000
 K-tag phys. sys.           0.0017   0.0000  0.0000  0.0975  0.0007
 BR(b->l)                   0.0006   0.0032  0.0000  0.0000  0.0000
 BR(b->c->l)                0.0005   0.0030  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                   0.0019   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          0.0007   0.0026  0.0000  0.0162  0.0000
 b frag xEb                 0.0007   0.0013  0.0000  0.0060  0.0008
 c frag xEc                 0.0006   0.0028  0.0000  0.0000  0.0001
 b frag shape               0.0005   0.0019  0.0000  0.0128  0.0000
 g->bb                      0.0007   0.0015  0.0010  0.0014  0.0003
 g->cc                      0.0001   0.0002  0.0000  0.0000  0.0001
 Polarization               0.0049   0.0052  0.0049  0.0060  0.0048
 QCD correction             0.0035   0.0048  0.0033  0.0026  0.0032
 BR(Z->b bbar)              0.0014   0.0004  0.0000  0.0001  0.0027
 BR(Z->c cbar)              0.0006   0.0007  0.0000  0.0002  0.0010
 Ac variation               0.0011   0.0028  0.0011 -0.0006  0.0005
 ** Total error             0.0209   0.0377  0.0307  0.1344  0.0258
 ** Systematic error sum    0.0148   0.0234  0.0235  0.1019  0.0181
 Weight fraction            1.0000   0.1786  0.3006  0.0135  0.5073

 Combined result =  0.9163+- 0.0147+- 0.0148
