2,145 research outputs found
Compact Formulas for Tree Amplitudes of Six Partons
Compact results are obtained for tree-level non-MHV amplitudes of six
fermions and of four fermions and two gluons, by using extended BCF/BCFW rules.
Combining with previous results, complete set of tree amplitudes of six partons
are now available in compact forms.Comment: 11 pages, RevTex. New results for fermions of multi-flavor and in
fundamental representations are include
Recursion Relations for Tree Amplitudes in Super Gauge Theories
Using newly proposed BCF/BCFW recursion relations, compact formulas are
obtained for tree-level n-gluon amplitudes of helicity structure --++...+. We
then make an extension of these recursion relations to include fermions of
multi-flavors, from which MHV and \bar{MHV} amplitudes are reproduced. We also
calculate non-MHV amplitudes of processes with two fermions and four gluons.
Results thus obtained are equivalent to those obtained by extended CSW
prescriptions, and those by conventional field theory calculations.Comment: Minor changes. Published versio
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