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Hi Roberto, I agree the MC plots are OK. Do you have something similar for data and for the other variables as well? Concezio. Il giorno gio, 10-05-2007 alle 16:22 -0700, Roberto Sacco ha scritto: > Ciao Concezio, > > > All variables look reasonably similar (could you please double check > > this as well?) apart from wdeltam, i.e. the missing mass squared for the > > partial D*+ reconstruction, see e.g. p.12, left plots of Michaels' > > presentation and left plots of p.26 of BAD1383. In release 18 the > > distributions for both enriched and depleted samples extend to lower > > values wrt release 14 and the shapes are quite different. Has anyone > > seen this effect yet? > > that may be a trick of the x scale: they are quite different. I reproduced the > plot, overlapping the wdeltam distributions for R18 and R14, SL cuts on Run3 > generic MC: you can find it in http://www.slac.stanford.edu/~sacco/plots/wdeltam.gif > where the crosses are R18. They look quite similar, although there are > discrepancies near zero. The number of rejected events with a cut at -3 is 32.1% > for R18 and 30.1% for R14. > > All the best, > > Roberto