StefanoSpataro Messages: 2736 Registered: June 2005 Location: Torino
first-grade participant
From: *117-80-r.retail.telecomitalia.it
Hi,
LHE ideal track finder is an ideal track finder (no conformal mapping) inside lhe package
However, the SttHelixHit are coming from the (realistic) STT helix fit. This means that, if for some reason the stt helix fit failed, lhe will have no hits (or maybe wrong hits), and the track will be simply lost. This effect is more pronounced at low momenta, were for some unknown reason the Z coordinate had systematic deviations.