TWiki> LHCb Web>LHCbTrackingEfficiencies>Velo2Long (revision 4)EditAttachPDF
Method for the determination of hadronic tracking efficiencies using partially reconstructed charm decays.

People involved: Mika Vesterinen, Laurent Dufour, J. Van Tilburg, S. Hellesund, D. Mueller.

Code

Code is available on GitLab in the "AsymmetryTools" subproject of semileptonics. https://gitlab.cern.ch/lhcb-slb/AsymmetryTools

Earlier documentation

"Measuring pion and kaon tracking efficiencies and asymmetries using charm decays with one partially reconstructed track" (S. Hellesund) LHCb-INT-2014-041

"Measurement of the Kaon Detection Asymmetry using Double-tagged Partially Reconstructed D0 Decays" (D. Mueller) LHCb-INT-2013-054

Overall structured flow paper

TaskSorted ascending Order Completed Link to .pdf
Comparison with other methods 4 No -
Fit model 2 No -
Projected results and conclusion 5 No -
Raw asymmetry and efficiency dependencies 3 No -
Resolution and bias studies 2 No -
Selection 1 Ongoing -
VELO efficiency determination 4 No -

Todo list

  • Create OVERLAP functor taking ChildSelector arguments.
  • Verify that the MatchLong efficiencies are the same as the StdAllNoPIDPions container
  • Verify the L0 GLOBAL TIS condition for the 2016 data set.
  • Run anti-isolation for the 2-body mode.
  • Run a toy study: is there a bias in the actual momentum from the DTF?
  • Plot the momentum resolution from DTF.
  • Actually get the VELO efficiencies in.
  • Create pointing mass functor (desirably taking ChildSelector arguments).
  • Find out the anomalous asymmetry for very low momentum pions.
  • Fit in bins of nTracks in one fixed bin of momentum

Earlier presentations

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Topic revision: r4 - 2016-07-14 - LaurentDufour
 
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