Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1994-04-06
Physics
High Energy Physics
High Energy Physics - Phenomenology
To appear in Proceedings Nonlinear Phenomena in Complex Systems. Polatsk Belarus. February 94 - 8 pages, 2 figs. using feynman
Scientific paper
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.
Ballestrero Alessandro
Maina Ezio
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