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T: Fachverband Teilchenphysik

T 16: Beyond the Standard Model (Theorie) I

T 16.4: Vortrag

Dienstag, 29. März 2011, 17:30–17:45, 30.23: 6-1

MSSM parameter determination via Gaugino/Chargino processes at one-loop — •Aoife Bharucha — II. Institut für Theoretische Physik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg

Supersymmetry is one of the best motivated extensions of the Standard Model, however in the unconstrained MSSM there are 105 parameters to be measured experimentally. A reasonable strategy would be to start with the gaugino/higgsino sector, as this is thought to contain the lightest particles. Although the relevant masses will hopefully be measured via cascade decays at the LHC, the measurement of the fundamental MSSM parameters of this sector requires the clean environment which will only be provided by a future linear collider, e.g. the ILC. It is known that, at tree-level, the measurement of observables in gaugino/higgsino processes allows access to such parameters through concise relations, however, perturbative corrections to these relations have so far not been studied. We therefore investigate the one-loop contributions to gaugino/higgsino processes, and consider the implications for MSSM parameter determination at the ILC.