A New Method for Computing Helicity Amplitudes
classification
✦ hep-ph
keywords
helicityspinorsamplitudesapplicationbrieflybuiltcalculationscomplete
read the original abstract
An helicity formalism for perturbative calculations is presented. It is based on the formal insertion in spinor lines of a complete set of states built up with unphysical spinors. It is particularly convenient when massive spinors are present. Its application to $e^+\,e^-\,\rightarrow b\,\bar b\,W^+W^-$ is briefly discussed.
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