Thanks for the help. While I had trouble understanding the cross-product matrix, the suggestion of defining ##[M^{*}]## like so actually helped me working through the algebra in a more efficient manner and I was able to reach an answer. Turns out the factor of ##1/2## was not exactly correct...
Hello everyone, I am new here, so please let me know if I am doing something wrong regarding the formatting or the way I am asking for help.
I did not really know how to start off, so first I tried to just write out all the ##\mu \nu \rho \sigma## combinations for which ##\epsilon \neq 0## and...