Polarized Single Top Quark Production in eγCollision and Anomalous Wtb Couplings

Abstract

We investigate the potential of $e\gamma$ collisions to probe anomalous $Wtb$ couplings via the polarized single top quark production process $e^{+}\gamma \to t\bar{b}\overline{{\nu }_e}$. We find 95% confidence level limits on the anomalous coupling parameters $F_{2L}$ and $F_{2R}$ with an integrated luminosity of $500f{b}^{-1}$ and $\sqrt{s}=0.5,1$ and 1.5 TeV energies. The effects of top quark spin polarization on the anomalous $Wtb$ couplings are discussed. It is shown that polarization leads to a considerable improvement in the sensitivity limits.

published version