-- ChengguangZhu - 31 Mar 2008

This is used for personal memory, careful to take as reference


To understand why the bias exist in spin correlation study, comparison between fast and full data are presented here. The events has passed the selection and final quality cut, which are good events in analysis.

The bias is now understood due to the discrepancy of the correction function calculation in fast and full simulation.


AcerMC data sample: trig1_misal1_mc12.005205.AcerMCttbar.recon.AOD.v12000605_tid014199, total 112k events, 62.5k semiletoptonic e/mu events as signal, finally 1138 good events pass all selection and quality cuts, and 123 tau background.


  • red: atlfast good events, blue: full simulation good events, brown: full simulation good events and passed (EF e||mu) trigger


  • all events: selected electron distribution of eta, pt and phi; e events: resolutions :

  • e events: electron selection efficiency vs. eta, pt and phi:

  • e events: selected electron p distribution and its selection efficiency vs p:

  • e events: coslep_true, coshad_lej_true, cosphilep_lej_true reconstruction efficiency :


  • all events: selected muon distribution of eta, pt and phi; mu events: resolutions :

  • mu events: muon selection efficiency vs. eta, pt and phi:

  • mu events: selected muon p distribution and its selection efficiency vs p::

  • mu events: coslep_true, coshad_lej_true, cosphilep_lej_true reconstruction efficiency :

  • all events: coslep_true, coshad_lej_true, cosphilep_lej_true reconstruction efficiency :


  • all events :

  • all events: selection efficiency for jet multiplicity:


  • all events:

reco objects

  • all events: t_had, t_lep and w_had resolution of pt , eta and phi:

  • all events: distribution of -3/0.51*cosphilep_lej, coslep and coshad_lej:

  • all events:
coslep (coshad_lej>0) coslep (coshad_lej<0) coslep
coshad_lej (coslep>0) coshad_lej (coslep<0) coshad_lej

Topic attachments
I Attachment History Action Size Date Who Comment
GIFgif fullfast_muon_155.gif r1 manage 10.3 K 2008-03-31 - 17:07 ChengguangZhu  
Unknown file formatcxx sel_comp_fast_full.cxx r1 manage 66.5 K 2008-03-31 - 23:28 ChengguangZhu  
GIFgif sel_etmiss.gif r1 manage 22.5 K 2008-03-31 - 16:33 ChengguangZhu  
GIFgif sel_fastfull_angle_e_reco_effi.gif r1 manage 15.6 K 2008-03-31 - 15:57 ChengguangZhu  
GIFgif sel_fastfull_angle_mu_reco_effi.gif r1 manage 15.5 K 2008-03-31 - 15:56 ChengguangZhu  
GIFgif sel_fastfull_angle_reco_effi.gif r1 manage 14.5 K 2008-03-31 - 16:10 ChengguangZhu  
GIFgif sel_fastfull_electron_dist.gif r1 manage 30.3 K 2008-03-31 - 15:58 ChengguangZhu  
GIFgif sel_fastfull_electron_reco_effi.gif r3 r2 r1 manage 15.0 K 2008-03-31 - 15:57 ChengguangZhu  
GIFgif sel_fastfull_jet_300.gif r1 manage 27.3 K 2008-03-31 - 16:27 ChengguangZhu  
GIFgif sel_fastfull_muon_dist.gif r1 manage 30.0 K 2008-03-31 - 15:57 ChengguangZhu  
GIFgif sel_fastfull_muon_reco_effi.gif r1 manage 13.7 K 2008-03-31 - 15:55 ChengguangZhu  
GIFgif sel_fullfast_angle_and_angle_resolution.gif r1 manage 15.0 K 2008-03-31 - 16:44 ChengguangZhu  
GIFgif sel_fullfast_angle_correllation.gif r1 manage 23.0 K 2008-03-31 - 16:48 ChengguangZhu  
GIFgif sel_fullfast_e_154.gif r2 r1 manage 10.4 K 2008-03-31 - 17:07 ChengguangZhu  
GIFgif sel_jets_303.gif r1 manage 9.3 K 2008-03-31 - 16:37 ChengguangZhu  
GIFgif sel_wt_reso.gif r1 manage 35.4 K 2008-03-31 - 16:37 ChengguangZhu  
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Topic revision: r3 - 2008-03-31 - ChengguangZhu
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