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> > > Since we have introduced the Vub MC component only to account properly for > > signal leakage above the Mx cut, I suggest we compute the Vub yield as > > data - Vcb component-other component > > and the error is propagated accordingly (the error coming from 'data' > > would be the pure statistics and the error on the other two pieces would > > have to be splitted between MC stat and data statistics) > > > > does this sound reasonable to you? actually statistical error for data and vcb, oth component error from fit are not uncorrelated since the first bin is used in the fit, right. How do we want to handle this? Daniele