Abstract
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.
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Acknowledgments
We thank Adrian Signer for useful communications. The research of K.M. was supported by the German Research Foundation (DFG, Deutsche Forschungsgemeinschaft) under grant 396021762-TRR 257. P. N. acknowledges the support of the Humboldt foundation.
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Makarov, S., Melnikov, K., Nason, P. et al. Linear power corrections to single top production processes at the LHC. J. High Energ. Phys. 2023, 153 (2023). https://doi.org/10.1007/JHEP05(2023)153
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DOI: https://doi.org/10.1007/JHEP05(2023)153