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Please teach me this:
When we use cutting rule for Bhabha scattering to cut the Feymann diagram to parts.Why we know the two parts are complex conjugation of each other,so we have optical theorem:
2ImM(s)=... M.M*...
Thank you very much in advanced
When we use cutting rule for Bhabha scattering to cut the Feymann diagram to parts.Why we know the two parts are complex conjugation of each other,so we have optical theorem:
2ImM(s)=... M.M*...
Thank you very much in advanced