File KalmanVertexUpdater.hpp¶
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namespace Acts
Set the Geometry Context PLUGIN.
Set the Calibration Context PLUGIN.
Convenience functions to ease creation of and Acts::InterpolatedMaterialMap and to avoid code duplication.
Set the Mangetic Field Context PLUGIN.
Convenience functions to ease creation of and Acts::InterpolatedBFieldMap and to avoid code duplication.
Currently implemented for the two most common formats: rz and xyz.
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namespace KalmanVertexUpdater¶
Functions
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template<typename input_track_t>
void updatePosition(const Acts::Vertex<input_track_t> &vtx, const Acts::LinearizedTrack &linTrack, double trackWeight, int sign, MatrixCache &matrixCache)¶ Updates vertex position.
- Parameters
vtx – Old vertex
linTrack – Linearized version of track to be added or removed
trackWeight – Track weight
sign – +1 (add track) or -1 (remove track)
matrixCache – [out] A cache to store matrix information
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template<typename input_track_t>
void updateVertexWithTrack(Vertex<input_track_t> &vtx, TrackAtVertex<input_track_t> &trk)¶ Updates vertex with knowledge of new track.
Note
KalmanVertexUpdater updates the vertex w.r.t. the newly given track, but does NOT add the track to the TrackAtVertex list. Has to be done manually after calling this method
- Parameters
vtx – Vertex to be updated
trk – Track to be used for updating the vertex
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struct MatrixCache¶
- #include <Acts/Vertexing/KalmanVertexUpdater.hpp>
KalmanVertexUpdater.
adds or removes track from or updates current vertex Based on R. Frühwirth et al. Vertex reconstruction and track bundling at the lep collider using robust Algorithms Computer Physics Comm.: 96 (1996) 189, chapter 2.1 Cache object to store matrix information
Public Members
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SymMatrix3 momWeightInv = SymMatrix3::Zero()¶
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SymMatrix3 newVertexCov = SymMatrix3::Zero()¶
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SymMatrix3 newVertexWeight = SymMatrix3::Zero()¶
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SymMatrix3 oldVertexWeight = SymMatrix3::Zero()¶
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SymMatrix3 momWeightInv = SymMatrix3::Zero()¶
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template<typename input_track_t>
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namespace KalmanVertexUpdater¶