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Hoi Daniele, interesting plots. Why is the B0 default value higher than what we had last week (BRBR = 0.0279 +- 0.0049)? Now it seems to be very close to 0.03. Why the variation by 150 MeV? I thought we had decided to use something like 90 MeV? The scans assume the default to be at 1.55, not your latest "optimal" value of 1.63, right? > As you can notice, moving mb down and a up, fixs part of the discrepancy > at low Mx low values. I would not say this (i.e. I disagree). In the DATA scans, compared to the default, the diff plots would indicate that the lower mb scans have higher level of disagreement. The overall shape seems to be independent of the mb value. The same seems to be true for mb = 4.95 (again, from the diff plots). I would conclude from this that we cannot measure mb competitively with this analysis. > 4) our measurement is so clean and we have so many events that we are > sensitive to these theoretical parameters. We can start thinking about > fitting a and mb. I think before we do that, we should understand the reco level cuts and effects a bit better. > 5) I am a bit less worried about this slope now I am a man of constant sorrow (as blind Richard Burnett would sing) ... Cheers, --U.