Speaker
Maria Dima
(JINR - DLNP)
Description
We present a new fast vertexing software for determination of the
primary vertex. The software is relying on the linear extrapolation
of tracks near the beamline, as the curvature of the track is negligible
for short distances. The method treats tracks as infinitely extended
ellipsoids, thereby transforming the vertex-finding problem into a
proximity one - between points with ellipsoidal error matrices. We have
implemented this approach in C++ using the NXV4 package for vector and matrix
operations. We have tested the resolution and speed performance on
SpdRoot simulated data, for the SPD experiment at JINR.
Author
Maria Dima
(JINR - DLNP)
Co-authors
Mihai-Octavian Dima
(JINR - MLIT)
Madalina Mihailescu
(Hyperion University of Bucharest)
