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We analyze the kinematic conditions under which the scattering of equivalent massive spin-1 vector bosons factorizes out of the complete process. In practice, we derive the conditions for the validity of the effective W approximation, proposed long ago but never established on a firm basis. We also present a parametric estimate of the corrections to the approximation and explicitly check its validity in two examples.
Jan Steggemann, Konstantin Androsov, Anna Mascellani
Jan Steggemann, Konstantin Androsov, Anna Mascellani
Jan Steggemann, Konstantin Androsov, Anna Mascellani