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PID information [message #21128]

Mon, 29 May 2017 16:22

Daniel Wielanek
Messages: 14
Registered: October 2012
Location: Warsaw

occasional visitor

From: *dynamic.gprs.plus.pl

Dear "FairROOTers"
Can somebody explain me what really mean "MotherID", or how to get mother PID?
I was trying to get PDG code of parent by something like this:
FairMCTrack *parent = (FairMCTrack*)mc_tracks->UncheckedAt(daughter->GetMotherId());
parent->GetPdgCode();
But when I looked at histograms I noticed that e.g. pion parent is particle with pid 211 - also pion, what is rather strange. This exist in Geant3/Geant4 setup. Is it a bug or "parent" is also particle that e.g. collided with this track?

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Re: PID information [message #22120 is a reply to message #21128]

Thu, 25 January 2018 09:17

Mohammad Al-Turany
Messages: 518
Registered: April 2004
Location: GSI, Germany

first-grade participant

From: *gsi.de

Hallo Daniel,

Sorry but somehow I did not see this post!! I am really sorry.

The mothered is the index of the parent particle in the simulation stack it has nothin to do with PDG, usually you get the TParticle (or MCTrack object) and then from the Particle you get the PDG.

best,

Mohammad

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