Draw the dominant Feynman diagrams for the reaction e + + e e +
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Draw the dominant Feynman diagrams for the reaction e+ + e− → νe + ν̅e. Estimate the order of magnitude and energy dependence of the corresponding contributions to the total cross-section for centreof- mass beam energies me << E << MW, MZ.
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The diagrams are At low energies both diagrams reduce to the zerorange approxima...View the full answer
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