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Status of MUID

Status of MUID. M. Biglietti Univ. “Federico II”- INFN Napoli. Athena Implementation. Inputs from Moore, Calo Reco and iPat Athena modules: MuidInit : gets tracks from Muon Reconstruction (Moore) and associates the truth from KINE bank MuidStandAlone :

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Status of MUID

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  1. Status of MUID M. Biglietti Univ. “Federico II”- INFN Napoli

  2. Athena Implementation • Inputs from Moore, Calo Reco and iPat • Athena modules: • MuidInit : • gets tracks from Muon Reconstruction (Moore) and associates the truth from KINE bank • MuidStandAlone: • muon tracks are propagated to the vertex • multiple scattering parameterised as scattering planes in calorimeters • energy loss from truth and/or from Calo Reconstruction (Tile, HECLAr and EMLAr CaloCells from CaloUtils/CaloEvent packages) and/or from parametrization in function of (eta,pt) • refit at vertex • MuidComb: • gets MuidTracks from previous step and ID reconstructed tracks (iPat) • Muon/ID tracks matches with a c2 cut-off • Combined fit

  3. Muonidentification – Athena Implementation Algorithms TDS MuidInit Moore Tracks TruthEvent Tracks MuidStandAlone MuidTracks status muon CaloClusters MuidComb MuidTracks status standalone MuidNtuple ID Tracks MuidIDNtuple MuidCombNtuple MuidTracks status combined Ntuples

  4. Package Structure and Status • Under offline/Reconstruction • Now: • MuonIdentification • MuonIdentification • src • MuinCBNT (for ntuples) • MuidCBNT • src • Restructuring plan: • MuonIdentification (as a container) • MuidAlgs • MuidEvent • MuidUtils • MuidCBNTAlgs • Status • Code in my private area. • Works in the 5.2.0 and 5.3.0, on both TDR and DC1 data. • Plan to release it a.s.a.p.

  5. iPatRec-Moore-MuonIdetification shared classes • Same Track and Fitter (from iPat) • Inheritance relationships

  6. Pt = 20 GeV Pt = 100 GeV Pt = 300 GeV MuidStandAlone - Energy loss in the Calorimeters I reconstructed (GeV) TDR data Total energy loss Total Tile from MC-Truth (GeV) Endcap hadronic LAr EM LAr

  7. MuidStandAlone – Energy Loss in the Calorimeters II reconstructed/true Corrections on energy loss needed eta-pt dependent m pt=100 GeV Function from Dimitris: maybe a bug in my implementation… under investigation parametrized/true |cotq|>1 |cotq|<1

  8. MuidStandAlone – refit @vertex Pt resolution @vertex Single  Pt = 20 Gev Single  Pt = 100 Gev

  9. MuidStandAlone – refit @vertex StandAlone Muid Pulls @vertex cot(theta) pulls phi pulls Single Pt = 20 Gev

  10. MuidComb Matching Procedure • A c2cut-off criteria match has been implemented comparing ID and Muid track (@vertex) parameters • When StandAlone refit fails (few hits in MS reco) or when there is no good c2 match, a comparison between angular parameters of tracks from ID and MS reco is performed and the best match is kept. • A “muon like” signal in calorimeters for identification is not implemented yet. • It would require the access to energy deposition in different zones of hadronic calorimeters

  11. MuidComb – match probability • c2probabilityusing only angular parameters • c2probabilitywith 5 d.o.f.: spike due mainly to the Pt-pull (no dead material description in Moore) Soon MUID will use new Moore version with material…

  12. PT Combination Pt = 100 GeV Muon Track (Moore + Calo + Muid)  = 2.8  = 5.2 InDet (iPatRec) Combined (Muid)  = 2.7

  13. Future plans • Release the code a.s.a.p. • Use of the new version of Moore (dead material) • Still several check and tuning to do • Calo energy loss corrections, calo regions, fitter step in calo region, matching procedure, material effects, multiple associations … bugs! • Start performance studies

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