

 Combine all Ac measurements (winter-01: Revised May/20/01)
 Lepton: 
       93-95: Muon+Electron PRL 
       96-98: Muon only from Giulia's thesis 
 D*,D  93-98: PRD publication  exclusive D*+,D and inclusive D*.
 K+Vtx 96-98: Revised 96-98 R17 analysis

 No statistical correlation is assumed between any analyses
 except the exclusive D*,D & soft-pi* overlaps are removed to combine 
 into one "D*,D" number. 
 
 May/20/01 Corrected parameter scaling 

Nmeas, Nuncorr    3    3   Average  Lepton  D*,D+    K+Vtx
Measurement values         0.6710   0.5910  0.6882  0.6739
Statistical correlation Matrix
 1.0000 0.0000 0.0000
 0.0000 1.0000 0.0000
 0.0000 0.0000 1.0000
Data Statistics            0.0209   0.0552  0.0349  0.0289
MC statistics              0.0024   0.0000  0.0000  0.0051
ML weights                 0.0018   0.0165  0.0000  0.0000
Tracking inefficiency      0.0020   0.0027  0.0000  0.0037
Tracking resolution        0.0034   0.0000  0.0000  0.0073
Jet axis smearing          0.0009   0.0087  0.0000  0.0000
mu background level        0.0015   0.0135  0.0000  0.0000
e  background level        0.0002   0.0019  0.0000  0.0000
mu background asymmetry    0.0009   0.0086  0.0000  0.0000
e  background asymmetry    0.0007   0.0067  0.0000  0.0000
Kaon mis ID                0.0006   0.0000  0.0000  0.0013
D*,D bckgr rate /asym      0.0073   0.0000  0.0173  0.0000
b-tag purity               0.0048   0.0360  0.0000  0.0020
b-tag L/D                  0.0003   0.0032  0.0000  0.0000
K+Vtx internal             0.0104   0.0000  0.0000  0.0221
BR(b->l)                   0.0005   0.0046  0.0000  0.0000
BR(b->c->l)                0.0006   0.0054  0.0000  0.0000
BR(b->cbar->l-)            0.0016   0.0152  0.0000  0.0000
BR(b->tau->l)              0.0004   0.0034  0.0000  0.0000
BR(b->J/psi->l+l-)         0.0001   0.0006  0.0000  0.0000
BR(c->l)                   0.0014   0.0129  0.0000  0.0000
B mixing                   0.0045   0.0026  0.0101  0.0000
B-> D** l nu frac          0.0005   0.0045  0.0000  0.0000
D->l spectrum              0.0005   0.0042  0.0000  0.0000
Bs fraction                0.0005   0.0043  0.0000  0.0000
Lambda b fraction          0.0003   0.0026  0.0000  0.0000
D->K production            0.0017   0.0000  0.0000  0.0036
b frag xEb                 0.0005   0.0024  0.0004  0.0001
c frag xEc                 0.0017   0.0127  0.0005  0.0002
b frag shape               0.0002   0.0015  0.0000  0.0000
c frag shape               0.0012   0.0000  0.0028  0.0000
g->cc                      0.0011   0.0017  0.0003  0.0017
g->bb                      0.0001   0.0004  0.0000  0.0001
Polarization               0.0035   0.0038  0.0034  0.0035
QCD corrections            0.0025   0.0050  0.0028  0.0016
BR(Z->b bbar)              0.0004   0.0006  0.0000  0.0007
BR(Z->c cbar)              0.0016   0.0092  0.0000  0.0012
Ab variation              -0.0005   0.0080 -0.0025 -0.0006
** Total error             0.0266   0.0768  0.0407  0.0381
** Systematic error sum    0.0165   0.0534  0.0209  0.0249
Weight fraction            1.0000   0.1077  0.4200  0.4723

Combined result =  0.6710+- 0.0209+- 0.0165
