Abstract
It is well known that cross-sections in perturbative QCD receive large corrections from soft and collinear radiation, which can be resummed to all orders in the coupling. Whether or not the universal properties of this radiation can be extended to next-to-leading power (NLP) in the threshold expansion has been the subject of much recent study. In particular, universal forms for next-to-leading order (NLO) cross-sections have been obtained for general colour-singlet production processes by considering only the emission of gluons. In this paper, we extend such formulae to processes containing final state jets, and show that the dominant NLP terms at NLO can be obtained using a similar prescription to the colour-singlet case. We furthermore consider the emission of soft quarks, which also leads to a class of universal NLP contributions at NLO. We illustrate our results using three different processes at NLO: deep-inelastic scattering, hadroproduction via electron-positron annihilation and prompt photon production.
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van Beekveld, M., Beenakker, W., Laenen, E. et al. Next-to-leading power threshold effects for inclusive and exclusive processes with final state jets. J. High Energ. Phys. 2020, 106 (2020). https://doi.org/10.1007/JHEP03(2020)106
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DOI: https://doi.org/10.1007/JHEP03(2020)106