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Hi Roberto, > ~sacco/public_html/comp1235_fitvar.eps a very preliminary comparison as > follow-up of the meeting. > The plots on the left are produced with CM2 on generic B+B-, the ones on > the right are the same using the old code. Only two cuts were used: > mes>5.27 and pcms (momentum of the lepton in the CMS) > 1 GeV. > Top left: MX - MXtrue for CM2 > Top right: MX - MXtrue for the old code > Bottom left: MXfitted - MXtrue for CM2 > Bottom right: MXfitted - MXtrue for the old code could you overlap them? could you produce a set of plot with an additional cut on mm2 (mm2<1 GeV)? could you also break down in Vub and Vcb events? Daniele