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Hi Kerstin, On Wed, 30 Aug 2006, Kerstin Tackmann wrote: > > Hi Heiko, Chuckwudi, and Francesca, > > I just gave Marco a bried update on what we talked about in the vub-recoil > meetings and here are some follow-up questions that came up in our > discussion: > > When doing the mES fits that we looked at and that are used to compute the > correction factors, do we reweight the B->D*lnu to the most recent form > factor values? Since fittest.* (the macro(s) in question) is designed to mimic VirVubFitter and reweighting B->D*lnu is done by VirVubFitter I assume that this is also done by fittest. >If not, could the different form factor values influence > the slow pion spectrum in a way that the D and D* composition in the > second bin (where e.g. the slow pion goes into the Breco in the > reconstruction) could give us such large differences between data and MC? I'll try to see if the B->D*lnu reweighting is done in fittest. > Would it make sense to check whether the muon and the electron sample > behave the same? While there is no obvious reason why they should not, we > do not quite understand what we are seeing either... Hmm... I'm not sure. > Do we fix the shape of the signal fit function on MC for the whole mX > range or do we do this bin-by-bin in mX? If we are doing it on the full > range, maybe we could better fits by doing this bin-by-bin on MC? After > all, we see that some of the fits to truth-matched MC do not look good. Since I perform fits using the Signal fit function on MC for bin-by-bin in mX then use the parameters obtained by performing said fits for Data also bin-by-bin in mX I guess the above is ruled out. Cheers, Chukwudi.