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Hi all, I performed a comparison ibu vs cpf looking at mes plot mode by mode. I started with the tags used by Urs for the mc-data production (see IslBrecoilUser/tags-112101). In ran just one reduced superblock1 collection for the D* (~2fb-1). The statisics is low but the results seem to be compatible. The only relevant difference is in the B mode 38-39 (B -> D 2k pi in K* window). There was a bug in the code for this mode. Now it is fixed by Riccardo in the new tags of CompositionTools (rf-121701). I repeated the study with the new tags (IslBrecoilUser/tags-122101). We have to add some new tags to make things working fine in analysis-12a. You have to take the tags in http://www.slac.stanford.edu/BFROOT/www/Physics/CP/beta/doc/postCP/tags-anal12 I ran on two colletions (one of superblock1 and one of superblock2). Again the results are very compatible. Just problems in some modes with low yields: - mode 53 seems to be gone - some disagreement in mode with high multiplicity and with many kaons (19-20-35-45) No other evident bugs were found. More studies should be needed but since these modes are not crucial we can post-pone them. Then the CONCLUSIONS are: - good agreement but I need to run on the full sample of reduced collections to say more. - no lack of yield in the main modes - Dpi mode is fine. - We have to move to the new tags with bug fixes for the new production - I don't understand numbers presented by Urs in http://www.slac.stanford.edu/BFROOT/www/Physics/Analysis/AWG/InclusiveSL/islreco il/modes/mesallevents-0-1.eps All D*pi have a lack of ~25% in yields. In my study I did not see any problem in this mode. I tried to look at the production root files for the D* and I noticed something strange. For instance in: /nfs/farm/babar/AWG/ISL/recoil/root/breco-112101/data/ dstar_092701_superblock1_2000_b2-s3_aa.root I see ~630 events (originally the collection had 2000 events) and the run range is 15300-15600. Runnning on the same collection I got ~1750 events with a run range of 15300-16400. Something is wrong here and could explain the difference in yield that we are observing. Urs, may you run on this collection and check. Thanks, Daniele On Fri, 21 Dec 2001, Urs Langenegger wrote: > > Hoi, > > ok, I redid the mode-dependent study, you can find them starting at > http://www.slac.stanford.edu/BFROOT/www/Physics/Analysis/AWG/InclusiveSL/islrecoil/modes/modes.html > > The signal pdf is a gaussian for the mode-dependent mes plots. All > modes I see are shown. No cut on purity has been applied. All data in > Run 1 in superblock 1 and 2 are used. > > I now see 41376 B candidates, fitted with CB, this is due to the > patched B+ modes, see > > http://www.slac.stanford.edu/BFROOT/www/Physics/Analysis/AWG/InclusiveSL/islrecoil/modes/mesallevents-0-1.eps > > You can run the relevant macro by doing > > cd ~ursl/root/anaRecoil > root > .L .../recoil.C // wherever you have your IBU stuff > loadMergedFiles() > plotMes(2) // the argument is the offset for the file > > Note: Please edit recoil.C first, so that you dump the plots into > another location (search for 'name' in plotMes() ...). Of course, you > can run it on your own rootfiles as well, just edit loadMergedFiles(). > > > Merry Christmas, now for good! > --U. >