Changes between Version 1 and Version 2 of GammaZ


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

--

Legend:

Unmodified
Added
Removed
Modified
  • GammaZ

    v1 v2  
    33== Gamma/Z interference in e+e- -> mu+ mu- ==
    44
    5    * Calculate analytically the cross section for  %$e^+ e^- \to \mu^+ \mu^-$% as function of the CMS energy, including
     5   * Calculate analytically the cross section for  $e^+ e^- \to \mu^+ \mu^-$ as function of the CMS energy, including
    66    both exchange of a photon and a Z boson. Neglect masses of the external fermions. Compare your result with
    77    Software.MadGraph.
    88   * The Forward-Backward asymmetry is
    9     %$A_{FB}(\theta)=\frac{ d\sigma (\theta) - d\sigma(\pi-\theta)}{ d\sigma (\theta) + d\sigma(\pi-\theta)}$%.
     9    $A_{FB}(\theta)=\frac{ d\sigma (\theta) - d\sigma(\pi-\theta)}{ d\sigma (\theta) + d\sigma(\pi-\theta)}$.
    1010    Plot it as a function of the CMS energy.
    1111
     
    1515
    1616
     17