Author: haert.nosp@m.el@m.nosp@m.ppmu..nosp@m.mpg..nosp@m.de

Introduction

Class to handle vertices as measurements in fitters and on track objects, it inherits from the common MeasurementBase. Typically a VertexFinder is run to get the best possible VertexCandidates. A VertexOnTrack instance then needs to be created for every track assoziated to a give VertexCandidate. Together with the hits from a track the VertexOnTrack can then be used to fit a new track which has the vertex as constraining measurement.

This mechanism is e.g. used by the InnerDetector alignment approaches as one way to get vertexing information into the alignment procedures.