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Completion of first release of ‘vertex package’

Completion of first release of ‘vertex package’. code development : complete coding of ghost track algorithm (BJ with advice from DJ) write C++ code to calculate the input variables for flavour tag available in FORTRAN (BJ)

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Completion of first release of ‘vertex package’

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  1. Completion of first release of ‘vertex package’ • code development: • complete coding of ghost track algorithm (BJ with advice from DJ) • write C++ code to calculate the input variables for flavour tag available in FORTRAN (BJ) • interface NN code from Bristol, with flexible input (default: Hawkings procedure) • interface vertex package to SGV (BJ) • interface vertex package to LCIO (MG?)

  2. Completion of first release of ‘vertex package’ • testing: • ZVRES: • test of the fitter (needed for ZVKIN): 2-track fitting (BJ), n-track fitting (MG) • other tests? • MC comparison: check C++ performs at least as well as FORTRAN version • ZVKIN testing (e.g. comparison with SLD performance at 50 GeV jet energy) • when SGV-interface available: check flavour tag and Qvtx (b-jets) still work • when LCIO-interface available: -“- • (after release: comparison of performance from Marlin cheaters with • performance using SGV jets) • documentation(in parallel with code development)

  3. Work beyond first release • After release of vertex package, continue to work on possible improvements: • can flavour tag and vertex charge reconstruction be improved by using different sets of • tracks for calculating Mpt? • should vertex charge be reconstructed in the same way or differently for b- and c-jets? • what improvement does ghost track algorithm give for flavour tag and vertex charge? • charge dipole (and particle ID)

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