Gluino decays in the complex MSSM: a full one-loop analysis |
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Authors: | S Heinemeyer C Schappacher |
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Institution: | 1.Instituto de Física de Cantabria (CSIC-UC),Santander,Spain;2.Institut für Theoretische Physik,Karlsruhe Institute of Technology,Karlsruhe,Germany |
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Abstract: | 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%)\mathcal{O}({\pm 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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