 |
 |
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