2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/157816We investigate the degree of spin polarization of single top quarks in the $eγ$ collision via the process $e^{+} γ\to t \bar{b} \bar{ν_{e}}$ with center of mass energies $\sqrt{s}$=0.5, 1 and 1.5 TeV of the parental linear $e^{+}e^{-}$ collider. Dominant spin fractions and spin asymmetries for the various top quark spin bases are investigated. We show that $e^{+}$-beam direction is the favorite top quark spin decomposition axis. It is found to be comparable with the ones in $pp$ and $ep$ collisions.5 pages, 3 figuresHigh Energy Physics - Phenomenologytext