Quantum-chromodynamic Estimates for Heavy-particle Production (1978)

Appendix C. Color Sums

We give explicitly the color sums associated with the various terms in Eq. (B10) (all repeated indices are summed over).

The color factors in angular brackets in the text are obtained by dividing the above color sums by to average over initial color states.

Table II gives the identities for matrix representations of SU(3) used to derive the color sums given above.

[ Table 2 ] Identities for matrix representations of SU(3).

represents the

identity matrix.