Hi,
there is a principal question for the unfolding which I would
like to raise and ask for feedback.
Since we have to choose some binning (which in general will
differ from the binning chosen for the fit) there are two
ways to go:
1) We choose 'our' equidistant binning, perform a fit where
all bins up to the cut value (1.55 GeV) are combined in
one bin and choose the result of this fit to produce the
final MX histo to be unfolded.
In this case we would not get exactly the same answer for
the branching ratio determination due to the different
binning above the cut value although the effect should be
small if the bin sizes do not get too small.
2) We perform the fit with the original binning and use the
outcome of this fit to produce the final MXhisto with
the bining chosen for the unfolding.
That is, we force that the result of the original fit is
taken into account to subtract the b>c and other BG.
I guess the second alternative is the more natural one.
Please let us know what do you prefer.
Cheers,
Heiko and Kerstin
