Determination of |Vub| (DGE) for the endpoint analyses

The same mb value used for the fit over all the independent analyses is used

|Vub| (DGE) for the endpoint analyses
Experiment Value [10-3] Parameters References Remarks
CLEO (E_{e}) 3.84 +/- 0.45 +/- 0.30 input Phys.Rev.Lett.88:231803,2002 (hep-ex/0202019) 2.1 < p < 2.6
BELLE (E_{e}) 4.79 +/- 0.45 +/- 0.26 input Phys.Lett.B621:28-40 (2005) (hep-ex/0504046) 1.9 < p < 2.6
BABAR (E_{e}) 4.29 +/- 0.29 +/- 0.28 input Phys.Rev.D73:012006,2006 (hep-ex/0509040) 2.0 < p < 2.6
Average +/- exp +/- (mb,theory) 4.26 +/- 0.27 +/- 0.25 chi2/dof = 0.98/2 (CL = 0.61) Plots: eps pdf gif mb input from PDG07 average
The full breakdown of the uncertainties on the average |Vub| above is (all errors quoted in percent):

+-2.5stat +-2.8exp +-3.3b2c model +-0.6b2u model +-0.7alpha_s R_CUT +-3.0mb R_CUT +-3.0 TOTAL SL WIDTH +-2.7 WA +-2.8DGE theory


where the errors correspond to the statistics (stat), the experimental systematics (exp), the modeling of b -> c l nu and b -> u l nu decays (b2c model and b2u model, respectively), the effect of the alphas uncertainty on R_CUT (alpha_s R_CUT), the effect of the uncertainty on mb on the prediction of the event fraction (mb R_CUT), the uncertainty on the total semileptonic B width (TOTAL SL WIDTH), the Weak Annihilation (WA) and from the change
and the variation of the scale of the matching scheme (DGE theory).