MSSM Effects in Top-antitop Production at the LHC

TL;DR

This paper calculates the impact of supersymmetry on top-antitop production at the LHC, revealing that supersymmetric loop effects can cause up to 6% corrections in cross-sections and asymmetries, varying across benchmark scenarios.

Contribution

It provides a detailed numerical analysis of supersymmetric effects on top pair production for multiple benchmark points at the LHC.

Findings

Supersymmetric effects can alter the cross-section by up to 6%.

Observable corrections are found for various benchmark scenarios.

Effects vary depending on the specific supersymmetric parameters.

Abstract

We report on a calculation of the effects of supersymmetry on the cross-section for top-antitop production at LHC. A numerical study is carried out for the ten benchmarks of the Snowmass accord. It is found that the higher order effects involving supersymmetric particles in internal loops can be as high as 6%, both for the cross-section and the (parity even) helicity asymmetry, for one particular benchmark. For other benchmarks smaller but nonetheless observable corrections are found.