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FastSim session, Elba general Meeting, June 01, 2010

Report from Elisa Manoni on FastSim session in June 2010. Includes bug fixes, mode classification, and Bsig modes.

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FastSim session, Elba general Meeting, June 01, 2010

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  1. Hadronic recoil package: status report Elisa Manoni INFN Sez. Perugia FastSim session, Elba general Meeting, June 01, 2010

  2. To-do-list from Annecy meeting • bugs to be fixed: • duplicate Breco candidates • couple of variables not properly filled • add extragamma block • from FastSim vs FullSim comparison • pi0 mass constrain not used in FastSim • missing mES peak • background characterization to define a cocktail for next production (see talk at next DGWG session) • clean up and commit of code for validation • documentation for wiki page

  3. PacHadRecoilUser code status • SemiExclusive reconstruction of Hadronic B modes • limit the number of reconstructed Breco channels according to their purity (>50%), Breco mode classification: neat : purity > 80% clean : 50% < purity < 80% dirty : 8%<purity<50% • Available Bsig modes • K* • K , Ks() •  , with e, , , (0), a1()

  4. duplicate Breco candidates events with duplicate breco candidates, i.e. same mES, DE, decayMode but different E*Breco , occurring only for modes with p0, i.e. BD*pp0, BDkp0ks related warning msg UsrWriteBSemiExcl::UsrWriteBRecoBase.hh(63):Cannot put mES = x.xxxxx for candidate yyyyyyyyyy in the UsrCandBlock the two cands are seen as clones although they are built using different gammas problem originating in a patch made to allow BtaTuple to work with clusters in FastSim ( primary fix in BetaMiniData/BtaRecoCandId + other places)  now FIXED (thanks to Dave ) !! if want to run PacHadRecoilUser code, use V0.2.3 and update Patches_devel packages

  5. FastSim-FullSim comparison: p0 mass (I) * FullSim _ FastSim p0 mass mD*-mD BD*X, D* Dp0 • p0 mass not constrained in FastSim ntuples • fix in p0 list implementation in PacHadRecoilUser/BSemiExcl.tcl

  6. FastSim-FullSim comparison: p0 mass (II) # Decay: B+ -> D*0(2007) pi+, B- -> X +c.c. # # |-> D0 pi0, gamma # # |-> K- pi+ # Chih-hsiang w mass constrain w/o mass constrain

  7. FastSim-FullSim comparison: missing mES peak (I) * FullSim _ FastSim • mES and DE before the selection neutral breco charged breco  Annecy plots  small private production: duplicate cand fix

  8. FastSim-FullSim comparison: kaon momentum charged breco Annecy plots * FullSim _ FastSim  small private production: duplicate cand fix charged breco neutral breco

  9. Conclusions • to-do-list from Annecy: • duplicate Breco candidates bug  FIXED • couple of variables not properly filled  FIXED • add extragamma block  DONE • pi0 mass constraint problem FIXED • missing mES peak  WORK IN PROGRESS, encouraging results after the duplicate cand fix (pi0 mass constraint not implemented in previous plots, this may help too) • background characterization to define a cocktail for next production (see talk at next DGWG session)  DONE • clean up and commit of code for validation  WORK IN PROGRESS • documentation for wiki page  WORK IN PROGRESS

  10. Back-up slides

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