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Heiko Lacker wrote: > * Concezio will produce (S/P)-double-ratios for depleted sample > (data/MC) taking into account S/P-correlations in the error > calculations in the data-depleted mES fit > plots which include the correlations are here: http://www.slac.stanford.edu/~bozzi/SoverP/SoverP_mcdata_depl_020.eps http://www.slac.stanford.edu/~bozzi/SoverP/SoverP_mcdata_depl_030.eps http://www.slac.stanford.edu/~bozzi/SoverP/SoverP_mcdata_depl_040.eps http://www.slac.stanford.edu/~bozzi/SoverP/SoverP_mcdata_depl_050.eps the spreadsheet used to produce the plots is http://www.slac.stanford.edu/~bozzi/SoverP/SoverPFullRew.sxc Please note that the correlations are not yet taken into account for intpur>0.5, as I could not find the appropriate logfile. The effect of the correlations is in any case small. Since the S and P are ANTIcorrelated (as expected), the error on S/P increase. Here are the double S/P ratios (MC/data) for different intpur cuts, as resulting from a simple p0 fit. Chisquares are also shown. intpur cut S/P chisquare/nDOF 0.20 1.33 +/- 0.15 3.5/9 0.30 1.41 +/- 0.16 2.9/9 0.40 1.19 +/- 0.17 8.7/9 0.50 1.25 +/- 0.17 8.4/9 (no correlations yet) I would say that data and MC depleted samples agree better and their ratio is weakly dependent on mX at higher integrated purity cuts. Ciao, Concezio.