Threshold corrections to hard supersymmetric relations

TL;DR

This paper calculates one-loop threshold corrections to gauge and gaugino couplings in a Split-SUSY spectrum, showing they are small but relevant for high-precision measurements at future colliders.

Contribution

It provides the first detailed computation of threshold corrections to supersymmetric relations in a Split-SUSY scenario with moderate scalar splitting.

Findings

Threshold corrections are small but non-negligible.

Corrections become relevant if heavy scalars are below 100 TeV.

Important for future collider precision measurements.

Abstract

We compute the one-loop threshold corrections to hard supersymmetric relations involving gauge and gaugino couplings for the case of a Split-SUSY-like spectrum with moderate splitting. We show that these contributions are small, however in principle they will typically have to be taken into account if the heavy scalar sector is below 100 TeV and if one reaches, at future linear colliders, the precision that is necessary to perform this kind of measurements.