S@M, a Mathematica Implementation of the Spinor-Helicity Formalism
High Energy Physics - Phenomenology
2009-05-22 v2
Abstract
In this paper we present the package S@M (Spinors@Mathematica) which implements the spinor-helicity formalism in Mathematica. The package allows the use of complex-spinor algebra along with the multi-purpose features of Mathematica. The package defines the spinor objects with their basic properties along with functions to manipulate them. It also offers the possibility of evaluating the spinorial objects numerically at every computational step. The package is therefore well suited to be used in the context of on-shell technology, in particular for the evaluation of scattering amplitudes at tree- and loop-level.
Cite
@article{arxiv.0710.5559,
title = {S@M, a Mathematica Implementation of the Spinor-Helicity Formalism},
author = {D. Maitre and P. Mastrolia},
journal= {arXiv preprint arXiv:0710.5559},
year = {2009}
}
Comments
52 pages, the package can be downloaded from http://www.slac.stanford.edu/grp/th/software/#Mathematica_Packages_