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"e+e- Physics with Herwig++"

The Monte Carlo event generator Herwig++ 1.0 for e+e- Annihilation is presented. Herwig++ is a complete rewrite of the existing Fortran program HERWIG. I will explain the underlying formalism of the new parton shower and the improvements that have been made in comparison to HERWIG. We have tested the program against a wide range of LEP data. I present these results and give an overview over planned future developments.
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