Abstract
Abstract The methods of coherent states and of structure functions in QED are considered in detail for a precise evaluation of the radiative effects at LEP/SLC. They are explicitly shown to give identical results for the exponentiated infrared factors and the o( α ) terms corresponding to the initial and final state radiation. Then the combined use of both techniques further improves the theoretical predictions to an accuracy better than 1%-including interference effects-and provides simple analytical formulae of immediate phenomenological application.
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