Gluino Decays in the Complex MSSM: A Full One-Loop Analysis

Details Gluino Decays in the Complex MSSM: A Full One-Loop Analysis Gluino Decays in the Complex MSSM: A Full One-Loop Analysis

2011-12-13

arxiv.org/abs/1112.2830v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

49 pages, 31 figures

Scientific paper

We evaluate all two-body decay modes of the gluino, in the Minimal Supersymmetric Standard Model with complex parameters (cMSSM). This constitutes an important step in the cascade decays of SUSY particles at the LHC. The evaluation is based on a full one-loop calculation of all two-body decay channels, also including hard QED and QCD radiation. The dependence of the gluino decay to a scalar quark and a quark on the relevant cMSSM parameters is analyzed numerically. We find sizable contributions to the decay widths and branching ratios. They are, roughly of O(5%), but can go up to +-10% or higher, where the pure SUSY QCD contributions alone can give an insufficient approximation to the full one-loop result. Therefore the full corrections are important for the correct interpretation of gluino decays at the LHC. The results will be implemented into the Fortran code FeynHiggs.

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