CP violating asymmetries in single top quark production at the Tevatron p pbar collider

Abstract

Analytic expressions for the angular distributions of the $b$-quarks associated with single $t$-quark production in $p\bar{p}\to W^{\ast }\to t\bar{b}\to b\bar{b}W$ and of the leptons from the subsequent decay $W\to l\hat{I}½$ are obtained in the laboratory system. CP violation in the $t$-production vertex is assumed. Different angular and total cross section CP violating asymmetries are considered. Relations testing CP violation solely in the $t$-decay vertex are also obtained. A numerical analysis is performed in the MSSM with a CP violating phase of the trilinear coupling $A_{\tilde{t}}$. The asymmetries are typically of the order $10^{-3}$ - $10^{-4}$.

The numerical results are corrected and some changes that meet the requirements of Phys. Rev. D are made