Equivalence of two component spinor mechanism and four component spinor mechanism in top quark pair production

Malvika Deo, Anuradha Misra, Sharada Subramanian +1

We calculate the $S$-matrix elements for the process $e^{+}{e}^{-}\to t\bar{t}$ mediated by SM photon, $Z$ boson and an additional $Z^{{}^{\prime }}$ boson indicating the contribution…