Ee. Boos et al., AUTOMATIC CALCULATIONS IN HIGH-ENERGY PHYSICS BY GRACE AND COMPHEP, International journal of modern physics C, 5(4), 1994, pp. 615-628
Ten three-body processes in e(+) e(-) collisions for heavy particle pr
oductions such as Higgs, t-quark, W+/- and Z(0) are calculated by two
independent computer codes for automatic calculation of Feynman amplit
ude. The results are in excellent agreement within statisi tical error
of numerical integration (about 0.5%). This demonstrates that these s
ystems are quite powerful for theoretical study for future e(+) e(-),
e+/-gamma and gamma gamma colliders. Numerical values of cross section
s are summarized in tables and a figure.