Add ghost probability filtering and tighten soft pion selection in CharmHad
This MR adds two things:
- Filtering on the track ghost probability (
TRGHOSTPROB
) for all basic charged inputs toCharmHad
; and - A tightening of the common soft pion selection in
CharmHad
.
The former enables the latter. We've decided to do the latter because it reduces the background significantly for an almost negligible loss of signal.
The exact soft pion selection could be tuned further, but the implementation here (PT > 200*MeV
and TRGHOSTPROB < 0.15
) is seen as a 'safe' option that already helps a lot.
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