FWD Software

["Van Buren, Gene" <gene AT bnl.gov>]

Is smaller sigma max == worse resolution, or better resolution?
-Gene

> On Jun 5, 2026, at 12:12 PM, Ogawa, Akio <akio AT bnl.gov> wrote:
> 
> One thing I failed to point out yesterday was momentum resolution. See 
> Pythia Jpsi plots for ET(fcs) vs PT(track) at right bottom :
> 2022 : 
> https://www.star.bnl.gov/protected/spin/akio/fcs/jpsi/dilep.cut4.JPsi.0.png
> 2026 : 
> https://www.star.bnl.gov/protected/spin/akio/fcs/jpsi/20260603/dilep.cut4...1.png
> Compare to “2022” (not sure how FwdTrackig was working at that time… was it 
> using some true info still?), it is much worse and almost no pT resolution 
> now...