We put the silicon hits information for analysis code.

cuts used :

nHitsFit >20

|eta|<1.0

dcaGlobal <1.5

nFit/nPoss >0.52 

1. QA histograms for the charged tracks

These histograms are :

• dcaD and dcaZ for all tracks and tracks with SVT+SSD >1

• sigma of dcaD and dcaZ vs momentum

• chi2 of tracks without and with SVT+SSD

 From the distribution of the DCA, instead of a cut dcaGlobal<1.5, a cut on the dcaD and dcaZ when using tracks with silicon hits may be better.

Have to look if we don't loose too many tracks candidates