Eur. Phys. J. C (2008) 54: 435-441
https://doi.org/10.1140/epjc/s10052-008-0543-4

Regular Article - Theoretical Physics

Polarized single top quark production in eγ collision and anomalous Wtb couplings

Department of Physics, Faculty of Sciences, Ankara University, 06100, Tandogan, Ankara, Turkey

^* e-mail: dilec@science.ankara.edu.tr

Received: 21 October 2007
Published online: 14 February 2008

Abstract

We investigate the potential of eγ collisions to probe anomalous Wtb couplings via the polarized single top quark production process e⁺γ→tb̄ν_ē. We find 95% confidence level limits on the anomalous coupling parameters F_2L and F_2R with an integrated luminosity of 500 fb^-1 and , 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.