News from ITS GPU seeding vertexer (Gabriele)
- Found that ATLAS uses a Gaussian Seeding vertexer with a grid approach to find the maximum of the vertex function
- --> Motivates to continue into this direction
- Implemented CPU version
- Algorithm uses tracks made from the first three layers
- Uses Taylor expansion on innermost cluster to generalize to a line
- Creates a grid around the beampipe to look for the maximum of the vertex function
- Need to adjust resolution
- Need to test with MC data accuracy of vertex function
- If quality for PVs reconstruction is good, need to think a way to select the positions
- Also if evaluate all the grid or only around the pairs