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arXiv · 2510.07397

Slepton pair production at next-to-leading power

Lasse Lorentz Braseth·Tore Klungland·Are Raklev
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Abstract

Near threshold, cross sections for the production of heavy particles are sensitive to large logarithmic terms, which must be resummed to all orders in perturbation theory. Current state-of-the art calculations for inclusive slepton pair production at hadron colliders has focused on higher-order logarithms in the leading power of the threshold variable. Here, we evaluate the next-to-leading power contribution in the threshold variable to leading logarithmic accuracy. We find that the next-to-leading power contributions can be significant compared to the next-to-leading logarithmic terms at leading power, and that existing calculations underestimate the scale error for large slepton masses. We include results for a potential future FCC-hh machine at $\sqrt{s}=85$ TeV.

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Lasse Lorentz Braseth, Tore Klungland, Are Raklev. 2025-10-08. Slepton pair production at next-to-leading power. https://doi.org/10.1007/jhep04(2026)213

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