# Changes between Version 1 and Version 2 of GammaZ

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Timestamp:
04/06/12 16:33:02 (8 years ago)
Comment:

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Unmodified
 v1 == Gamma/Z interference in e+e- -> mu+ mu- == * Calculate analytically the cross section for  %$e^+ e^- \to \mu^+ \mu^-$% as function of the CMS energy, including * Calculate analytically the cross section for  $e^+ e^- \to \mu^+ \mu^-$ as function of the CMS energy, including both exchange of a photon and a Z boson. Neglect masses of the external fermions. Compare your result with Software.MadGraph. * The Forward-Backward asymmetry is %$A_{FB}(\theta)=\frac{ d\sigma (\theta) - d\sigma(\pi-\theta)}{ d\sigma (\theta) + d\sigma(\pi-\theta)}$%. $A_{FB}(\theta)=\frac{ d\sigma (\theta) - d\sigma(\pi-\theta)}{ d\sigma (\theta) + d\sigma(\pi-\theta)}$. Plot it as a function of the CMS energy.