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[[Star-fwd-software-l] ] Forward Track Fits Missing FTT points

From: Borna Maghoul <bmagh001 AT ucr.edu>
To: star-fwd-software-l AT lists.bnl.gov
Subject: [[Star-fwd-software-l] ] Forward Track Fits Missing FTT points
Date: Tue, 12 Aug 2025 20:24:05 -0700

Hi all,

I've been playing around with the most recent commit of the StFwdTrackMaker on some simulated muon and pythia datasets and I've noticed that the reconstructed tracks only use the FST and the vertex for fits, and that another fit using FTT hits aren't done. Based off of the debug, the FTT hits are being loaded in, as seen below:

I'm using the FST seeding. After the seed fitting with the FST points, no further fits are done, so the total number of fit points for the track is at most 4. Does anyone know why this is occurring? It seems that last month the tracker didn't seem to have this issue.

Regards,

Kumar

[[Star-fwd-software-l] ] Forward Track Fits Missing FTT points, Borna Maghoul, 08/12/2025
- Re: [[Star-fwd-software-l] ] Forward Track Fits Missing FTT points, Brandenburg, Daniel, 08/13/2025
  - Re: [[Star-fwd-software-l] ] Forward Track Fits Missing FTT points, Akio Ogawa, 08/14/2025
    - Re: [[Star-fwd-software-l] ] Forward Track Fits Missing FTT points, Brandenburg, Daniel, 08/14/2025