[Eic-core-phys] [EXTERNAL] DELPHES analysis

[Hyde, Charles E.]

I posted the following message about DELPHES resolution results to the SLACK channel
https://urldefense.proofpoint.com/v2/url?u=https-3A__app.slack.com_client_T02B4F96G0J_C02BU5BP89E&d=DwIFAw&c=CJqEzB1piLOyyvZjb8YUQw&r=j2nVWPYkVu_g_8UgmNTpIOwdxsfZ27gFzo9MkyDLevk&m=P7iY6Lwuni50EsBlbmVc4r05l7-vGE3QCnMkos94TuZq2Q_QvJASxIio4RNXyoAl&s=Ii5pm_xpcoj90hiYIwLyxZhUNvigC-RusfbbuJ1BEhY&e= 

The Track bank includes error values on the reconstruction, but these seem to be 0.
There is also a subclass within Track labelled Particle.
This is a root TRef, which is a complicated structure that points to the entire genParticle structure of the corresponding generated particle in the Particle bank.
I added the following code snippet to my dis_analyzer.cpp macro:
for (int iTrk=0; iTrk<branchTrack->GetEntries(); iTrk++) {
   thisTrack = (Track *) branchTrack->At(iTrk);
   ptrk = thisTrack->PT*cosh(thisTrack->Eta);
   pgen = thisParticle->PT*cosh(thisParticle->Eta);
   h2_dp_vs_eta->Fill(thisParticle->Eta,(ptrk-pgen)/pgen);
}
the histogram h2_dep_vs_eta contains the momentum error vs eta of all reconstructed tracks








Sincerely,

Dr. Charles E. Hyde
Eminent Scholar and University Professor of Physics

Old Dominion University

4600 Elkhorn Ave

Norfolk VA 23529
PS-II 2100D
1 (757) 683 5853

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