Study p-value: split up contributions to p-value shape using MC and study shape in data, e.g. is there an error in the resolution per plane, handling of MCS, handing of energy loss, b field..
Tracker group: Summarize, show what has been studied so far for systematics (alignment, scattering, energy loss, field uniformity, etc).
Q: how loose should the LSQ cuts be? AD points to loosest cut in table from previous meeting.
for circle fit: suggestion is to define a mean error and apply to every station rather than station-by-station errors.
Q: how to define mean error? based on the geometric mean of the errors?
Q: does taking the chi^2/mean_error^2 bias the pr fit?
CR notes that aperture cut should be standardized by tracker group. AD notes that the cut in PR is loose -- 150.
Q: does the current aperture cut throw out any potential tracks? If it does, cut should be loosened, but consensus seems to be that tracking should not do any "analysis-style" cuts but rather optimize track-finding.
Effect of magnetic field non-uniformity, alignment on track fit -- CH had issues reading mag field map from Joe Langland's program. CH will check against comsol map for 7469.