Vertex Reconstruction: muDst status
Updated on Thu, 2017-01-19 15:31. Originally created by smirnovd on 2017-01-19 15:14.
Last time: Systematic shift in pull distributions. Now understood: The reason is the default vertex position for failed fits. Put vertex direclty on beamline if fit fails.
Marking tracks as primary. The global tracks assigned to vertex at final stage if
track was used in seeding OR d/(sigma_DCA + sigma_vertex) < N (fully correlated DCA and vertex)
where
d is the distance between the track DCA and the vertex
sigma_DCA is the total error (amplitude) on the track DCA
sigma_vertex is the total error (amplitude) on the vertex position
Results available at: www.star.bnl.gov/~smirnovd/vtxeval/index.html
beamline 1D
beamline 3D
no beamline
Last time: Systematic shift in pull distributions. Now understood: The reason is the default vertex position for failed fits. Put vertex direclty on beamline if fit fails.
Marking tracks as primary. The global tracks assigned to vertex at final stage if
track was used in seeding OR d/(sigma_DCA + sigma_vertex) < N (fully correlated DCA and vertex)
where
d is the distance between the track DCA and the vertex
sigma_DCA is the total error (amplitude) on the track DCA
sigma_vertex is the total error (amplitude) on the vertex position
Results available at: www.star.bnl.gov/~smirnovd/vtxeval/index.html
beamline 1D
beamline 3D
no beamline
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