Vertexing tasks

1. Primary vertex efficiency studies in Z->mumu (Suyong)
2. Correct packing for Z coordinate of the primary vertex in thumbnail (Serban)
3. Beam width measurements (Juan)
4. Primary vertex errors (too large ?) and pulls (?)
5. Primary vertex in Monte Carlo (correct luminous region and beam spot size) (?)
6. Detailed instructions on how to work with vertices: how to access primary vertices, how to create primary vertices on the fly, how to obtain the hard scattering primary vertex in Monte Carlo and data (Ariel, Aran, Gordon)
7. Primary vertex reconstruction inefficiency: analysis of Z->mumu events without primary vertices (Aran)
8. Secondary vertex reconstruction efficiency (Ariel)
9. Study of biases in Lxy (b-physics group)
10. AA vertexing, comparison to standard D0 algorithms (Guennadi)
11. Vertexing prior to tracking (Yuri)
12. Certification plots in reco_cert (Harry)
13. Vertexing certification note (Flera)