Z polarization in $\gamma \gamma$,gluon-gluon $\to t\bar{t}Z$ for testing the top quark mass structure and the presence of final interactions

Abstract

We show what type of effects on the rate of $Z_L$ production in the $\gamma \gamma \to t\bar{t}Z$ and $gluongluon\to t\bar{t}Z$ processes could be produced by an effective scale dependent top mass or by final state interactions between massive particles for example generated by the presence of dark matter.

Comments: 12 pages, 7 figures