Next-to-Leading Order NMSSM Decays with CP-odd Higgs Bosons and Stops

TL;DR

This paper calculates the next-to-leading order electroweak and SUSY-QCD corrections to CP-odd Higgs boson decays into stop pairs in the NMSSM, highlighting their importance for accurate decay width predictions.

Contribution

It provides the first comprehensive NLO calculation of these specific decay processes in the NMSSM, including both electroweak and SUSY-QCD corrections.

Findings

EW and SUSY-QCD corrections are significant.

Corrections are essential for precise decay width predictions.

Analysis includes decay of heavier stop into lighter stop and CP-odd Higgs.

Abstract

We compute the full next-to-leading order supersymmetric (SUSY) electroweak (EW) and SUSY-QCD corrections to the decays of CP-odd NMSSM Higgs bosons into stop pairs. In our numerical analysis we also present the decay of the heavier stop into the lighter stop and an NMSSM CP-odd Higgs boson. Both the EW and the SUSY-QCD corrections are found to be significant and have to be taken into account for a proper prediction of the decay widths.