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The Dispersive Approach to Electroweak Processes in the Background Magnetic Field
We propose a new method to compute amplitudes of electroweak processes in the
strong background magnetic field, using as an example. We
show that the {\it moments} of width are proportional to the
derivatives of photon polarization function at the zero energy. Hence, the
pair-production width can be easily calculated from the latter by the inverse
Mellin transform. The prospects of our approach are commented.Comment: 3 pages, talk presented in DPF2000, Aug. 9-12, Ohio State
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