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Karlsruhe 2011 – scientific programme

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T: Fachverband Teilchenphysik

T 16: Beyond the Standard Model (Theorie) I

T 16.8: Talk

Tuesday, March 29, 2011, 18:30–18:45, 30.23: 6-1

CP violation in the Higgsino/Gaugino sector of the NMSSM at linear colliders — •Philipp Levermann — 2. Institut für theoretische Physik, Luruper Chausse 149, 22761 Hamburg

The next-to-minimal supersymmetric Standard Model (NMSSM) includes a Higgs singlet in addition to the two Higgs doublet superfields of the MSSM. Consequently the neutralino sector is also enlarged, such that there are five neutralinos. Hints of Supersymmetry are expected to be observed at the LHC. However, to clearly distinguish the NMSSM from the MSSM and precisely unravel the underlying structure of the neutralino sector a future Linear Collider, e.g. the ILC, is required. In this talk we study the Higgsino/Gaugino sector of the NMSSM including CP violating effects and discuss the relevant parameters and their mixing, as well as strategies for distinguishing the different models. In light of the sensitivity of such colliders to polarization, we are also interested in spin dependent observables, which turn out to be extremely useful in determining CP violating effects.

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