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hi Daniele, you are right...actually code does not allow to do a separate fit for resonant e non resonant. I'll improve it in short time. cheers Vir > I had a quick look at the VirFit and it seems to me that it does not allow > for just one vub component (instead of two, resonant and non resonant). > Virginia or Alessio, could you confirm this? If this is the case, the > signal mx shape should be completely screwed up. Kerstin, are you seeing > this effect? > > Daniele > > On Wed, 28 Jan 2004, Kerstin Tackmann wrote: > > > > > Fermi reweighting was switched off, we have DELTAMB = DELTAA = 0 (I > > checked the logfiles again.) The only thing that was change from the usual > > fit is that either the nonres or the hybrid just got not read in. > > > > Kerstin > > > > > > On Wed, 28 Jan 2004, Daniele del Re wrote: > > > > > > > > are you sure that you switched off the fermi reweighting in performin the > > > fit with hybrid and nonres? > > > > > > Daniele > > > > > > > Hi, > > > > > > > > this concerns the hadronization error. > > > > > > > > Reading the BAD (ch. 7.11.3) I understand that to evaluate the error due > > > > to uncertainties in the hadronization model, you do the fit once using > > > > only nonresonant and once using only hybrid model MC for the Vub MC. You > > > > find a difference of 3.0% there between the final results (I assume with > > > > final result you mean BRBR, correct?). > > > > > > > > If I go through the fit one time using only the nonres MC and one time > > > > only using the mix MC, I find really different results for BRBR (using > > > > the default binning, i.e. one bin until the cut), though: > > > > > > > > with only nonres: > > > > BRBR 0.032563 0.0033704 0.00145874 > > > > > > > > with only hybrid: > > > > BRBR 0.0132341 0.001452 0.000574687 > > > > > > > > using the default mixture: > > > > BRBR 0.0219666 0.00234676 0.000873771 > > > > > > > > This does not at all look like a 3.0% error. Did I misinterprete the > > > > description? Did you change anything else than just using only one type > > > > (nre,mix) for the Vub MC? Or maybe I misunderstood something else? > > > > > > > > Thanks, > > > > Kerstin > > > > > > > > > > > > > >