Difference between revisions of "Update on track finding in FDC"
From GlueXWiki
| Line 1: | Line 1: | ||
The segment-based track-finding algorithm has been refined: | The segment-based track-finding algorithm has been refined: | ||
* I no longer rely on the refitting to determine the charge of the particle unless the individual segment information is ambiguous for those segments linked into candidates. | * I no longer rely on the refitting to determine the charge of the particle unless the individual segment information is ambiguous for those segments linked into candidates. | ||
| + | * The dip angle and vertex position are determined from either the most upstream segment or the result of the refit depending on which gives a vertex position closest to the center of the target. | ||
* The track-matching cut from segment to segment is now momentum-dependent: <math>\delta r < 2.79+ 2.88/p^2</math>. | * The track-matching cut from segment to segment is now momentum-dependent: <math>\delta r < 2.79+ 2.88/p^2</math>. | ||
[[Image:segment_matching_cut.gif]] | [[Image:segment_matching_cut.gif]] | ||
Revision as of 09:33, 29 February 2008
The segment-based track-finding algorithm has been refined:
- I no longer rely on the refitting to determine the charge of the particle unless the individual segment information is ambiguous for those segments linked into candidates.
- The dip angle and vertex position are determined from either the most upstream segment or the result of the refit depending on which gives a vertex position closest to the center of the target.
- The track-matching cut from segment to segment is now momentum-dependent:
.
