Hi all,
playing with the multiplicity fit scans I discovered that the excess in
Mx spectrum that affects the Mx scans is due to a particular mutiplicity
category.
Compare the fit result for the category 1 charged track and >0 neutrals.
data
http://www.slac.stanford.edu/~daniele/vub/multi/B0datathesis_multich2ne2fitresults_nocat.eps
generic MC
http://www.slac.stanford.edu/~daniele/vub/multi/B0genethesis_multich2ne2fitresults_nocat.eps
The 3' bin (0.6 GeV - 1.1 GeV) scales properly, while the next one (1.1
GeV - 1.55GeV) show a large excess.
The ratio(BR) I get is a factor 2 higher.
For Bch the results are perfect.
Daniele
|