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• ``QED DRESSERS''

• The Born approximation written in a convenient form (choose

• the parameter in such a way that most of the corrections are

• already included in the numerical values of these parameters)

• turns out to be an excellent approx. (~0.2% on the Z0 peak)

• These type of MC programs apply QED corrections to the

• parametrized s

• They assume factorization QED + ELECTROWEAK

• INPUT: MZ , GZ , sin2qW ,¼ (given by some other code)

• ADVANTAGES:

• Fast, all parameters can be varied independently e.g. MZ and GZ