Hi all,
in
http://www.slac.stanford.edu/~daniele/vub/toterrmax.eps
I show the total error as a function of the Mx cut.
This is the sum in quadrature of
- statistical error (green curve)
- theoretical error, mb (red curve)
- theoretical error, a (blue curve)
- B-D decay systematics (yellow curve)
The statistics is ~equivalent to the data one and extracted from MC.
Theor. errors come from plots shown by Urs in his last posting. I used
the ones with mb = 4.800 +/- 150 MeV and a = 1.29 +/- 1.0.
The B-D systematics was extracted directly on data (see one of my last
posting and the plot
http://www.slac.stanford.edu/~daniele/vub/mxstudy.ps).
The "best" cut is for 1.55 GeV.
Then, the error we should expect on data is 23%. The remaining
systematics have to be added. The total error probably will not exceed
27% (=>13/14% on Vub).
Daniele
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