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Remarks on the W propagator at the resonance

G. Lopez Castro, J. L. Lucio M., J. Pestieau

hep-pharXiv:hep-ph/9504351

Abstract

We address the problem of properly defining the W, Z0 propagator in the resonance region. Particular attention is paid to the longitudinal piece of this propagator. We also discuss the related renormalization procedures and the unitarity property.

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