 |
 |
Hi all, I made a first check of the analysis code committed in IslBrecoilUser. I perfomed the test on B0 cocktail MC comparing with results obtained using SemiExclUser+CPFramework. For IslBrecoilUser I used: - root file produced by the last version of IbuNtpDump.cc (and tcls). They are the ones in Urs page. - the recoilNtp.cc and other root stuff in IslBRecoilUser (HEAD) For SemiExcl + CPFramework side: - hbook produced by the last version of SemiExclAnalysis.cc - CPFramework and my routine CpfRecoilStudy.F (basically the source code, root macros are pretty similar to it) I compared the histograms implemented by now, some MC plots and reco plots after lepton and Q=0 requests. MC : ---- - p*, Mx are ok - some disagreement in the number of semileptonic event (b->clnu). The Isl... code seems to have less event (you expect ~21% of the total) http://www.slac.stanford.edu/~daniele/vub/nVcb_root.ps http://www.slac.stanford.edu/~daniele/vub/nVcb_cpf.ps (I ran on different statistics) RECO: ----- (cpf was run on ~5% more events) - Mx: pretty similar but some shift up in the mean. It seems that there are less events at Dc/D0 and D* masses. http://www.slac.stanford.edu/~daniele/vub/Mx_root.ps http://www.slac.stanford.edu/~daniele/vub/Mx_cpf.ps - Mv**2 : fine http://www.slac.stanford.edu/~daniele/vub/Mnu_root.ps http://www.slac.stanford.edu/~daniele/vub/Mnu_cpf.ps - Reso Mx: a bump around 3 Gev in Isl... http://www.slac.stanford.edu/~daniele/vub/resoMnu_root.ps http://www.slac.stanford.edu/~daniele/vub/resoMnu_cpf.ps The main disagreement is in the number of b->clnu events in the MC truth and the Mx resolution. These effects need to be investigated. Daniele