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Hi, if I'm not mistaken there is a bug (at least in a part) in SP8 where not all B->D**lnu modes have been simulated. That could explain the difference you see in the lepton spectra between data and MC. This has been reported at the last Collab meeting. I don't know where though. Cheers, Heiko On Fri, 9 Dec 2005, Wolfgang Menges wrote: > Hi Sheila, > > every MC produced with release 18 is SP8. Your example was > production/skimming cycle R18b. > > Cheers, > > Wolfgang > > On Fri, 9 Dec 2005, Sheila Mclachlin wrote: > > > > > On Fri, 9 Dec 2005, Heiko Lacker wrote: > > > > > And it's SP8...? > > > > > > Heiko > > > > The command to make (for example) the Run2 tcl files was: > > > > BbkDatasetTcl --nolocal --dbname bbkr18 BSemiExcl-Run2-OnPeak-R18b > > > > I don't know if that means "SP8" or not. > > > > sheila > > > > > > > > > > > > > > On Thu, 8 Dec 2005, Sheila Mclachlin wrote: > > > > > > > On Thu, 8 Dec 2005, Heiko Lacker wrote: > > > > > > > > > Hi Sheila, > > > > > > > > > > could you remind what kind of MC you are comparing with? > > > > > > > > The MC is a mix of SP-1235 (generic BpBm) and SP-1237 > > > > (generic B0B0bar). You can see the chains at: > > > > > > > > ~penguin/vubrecoil/compare/workdir/chains > > > > > > > > (I did not do anything to make sure the number of BpBm > > > > was the same as the number of B0B0bar, though.) > > > > > > > > For details on how I made the ntuples, see the webpage. > > > > > > > > sheila > > > > > > > > > > > > > > Heiko > > > > > > > > > > On Wed, 7 Dec 2005, Sheila Mclachlin wrote: > > > > > > > > > > > > > > > > > On Tue, 6 Dec 2005, Heiko Lacker wrote: > > > > > > > > > > > > > Hi Sheila, > > > > > > > > > > > > > > we have discussed a bit your plots: > > > > > > > It would be useful to apply some loose cuts like a cut on M_ES. > > > > > > > > > > > > > > Concerning the lepton spectra: is this for the lpeton with the > > > > > > > highest energy or for all leptons? > > > > > > > > > > > > > > > > > > > OK, I have once again remade the plots, with the > > > > > > cuts recommended by Roberto: > > > > > > > > > > > > mes > 5.27 > > > > > > Qtot == 0 > > > > > > plepton > 0.8 > > > > > > > > > > > > (The plepton cut is applied only where it makes sense - > > > > > > ie, in events that are required to have a lepton.) > > > > > > > > > > > > As you know, the plots and details are all on the webpage: > > > > > > > > > > > > http://www.slac.stanford.edu/~penguin/VubStuff/VubRecoil/R18mig/index.html > > > > > > > > > > > > sheila > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > ----------------------------------------------------------------------------- > Wolfgang Menges > Queen Mary, University of London SLAC, MS 35 > Mile End Road 2575 Sand Hill Road > London, E1 4NS, UK Menlo Park, CA 94025, USA > ++44 20 7882 3753 ++1 650 926 8503 > [log in to unmask] > ----------------------------------------------------------------------------- >