Hi all,
today, at the meeting, we discussed about the scaling factor
between generic and cocktail MC for the ratio
lumi(hybrid)/lumi(pure non resonant)
used in the weights calculation and the goodness of the mes fits. I
applied a loose cut on the purity (intpur>.2)
These are the numbers:
+++++++++++++++++++++++++++++++++++++
nmix(cockMC) = 10366.3 +- 139.558
nnre(cockMC) = 12015.7 +- 148.974
nmix(geneMC) = 9764.37 +- 156.282
nnre(geneMC) = 6412.87 +- 127.174
+++++++++++++++++++++++++++++++++++++
ratio mix/nre cocktail = 0.862731
ratio mix/nre generic = 1.52262
+++++++++++++++++++++++++++++++++++++
---> ratio(ratio) generic/cocktail = 1.76489
very close to the one used by Alessio (1.74).
These are the fits
http://www.slac.stanford.edu/~daniele/vub/plots.eps
The quality of the fits looks reasonable.
Varying the cut on the purity (as a sanity/crosscheck) the result is
stable:
intpur>.2 ratio(ratio) cocktail/generic = 1.76489
intpur>.3 ratio(ratio) cocktail/generic = 1.7804
intpur>.4 ratio(ratio) cocktail/generic = 1.82348
intpur>.5 ratio(ratio) cocktail/generic = 1.81961
intpur>.6 ratio(ratio) cocktail/generic = 1.74887
intpur>.7 ratio(ratio) cocktail/generic = 1.71669
intpur>.8 ratio(ratio) cocktail/generic = 1.69702
Alessio will show the fit results for each Mx bin in the weights
calculation.
Daniele
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