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QFT problem set n?5 QED Cross Sections 1 e+e (Bhabha) Scattering

TD3 ?. 1] & 3 Theory. ± m²². L = {2424 - 1 ????? ... in the process (eg (PitP?) = Ecm). 3. 9. 2. P4. (-ig)²_i. A?. 1. 9= P?+P? = P3 + P q.



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