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[Zachary Sweger <zwsweger AT ucdavis.edu>]

Hi TPC Experts, 

As we discussed this morning, the primary (DCA<3cm) track multiplicity in the test production of 3.2 GeV is lower than in P24ia. Most analyzers require that each track have nHitsFit/nHitsMax>=0.51. After our discussion this morning, I plotted nHitsFit versus nHitsMax (labeled nPossible) and I noticed that many tracks (DCA<3cm) in the test production have very large values of nHitsMax:

The red line shows the nHitsFit/nHitsMax=0.51 cut. Another strange thing in the right plot is the lack of tracks with nHitsFit<15. How can so many tracks have nHitsMax values greater than 72? I also tested for tracks with |eta|>2 for which we expect nHitsMax<~40 and saw many tracks still with surprisingly large nHitsMax values:

Were there any changes to how nHitsMax is calculated in the test production? I'm accessing this variable from the picoDsts via 

mPicoTrack->nHitsMax();

Thanks!

Zach