  We discuss the linear power corrections to the electroweak production of top
quarks at the LHC using renormalon calculus. We show how such non-perturbative
corrections can be obtained using the Low-Burnett-Kroll theorem, which provides
the first subleading term to the expansion of the real-emission amplitudes
around the soft limit. We demonstrate that there are no linear power
corrections to the total cross sections of arbitrary processes of a single top
production type provided that these cross sections are expressed in terms of a
short-distance top quark mass. We also derive a universal formula for the
linear power corrections to generic observables that involve the top-quark
momentum.
