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Search: authors:"Toby Opferkuch"

4 papers found.
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Spontaneous charge breaking in the NMSSM: dangerous or not?

We investigate the impact of charge-breaking minima on the vacuum stability of the NMSSM. We concentrate on the case of vanishing A-terms in the sfermion sector, i.e. the only potentially dangerous sources of charge breaking are vacuum expectation values of the charged Higgs fields. We find that, in contrast to Two-Higgs-Doublet Models like the MSSM, at both tree and loop level ...

Perspectives for detecting lepton flavour violation in left-right symmetric models

We investigate lepton flavour violation in a class of minimal left-right symmetric models where the left-right symmetry is broken by triplet scalars. In this context we present a method to consistently calculate the triplet-Yukawa couplings which takes into account the experimental data while simultaneously respecting the underlying symmetries. Analysing various scenarios, we then ...

Precision tools and models to narrow in on the 750 GeV diphoton resonance

Kilian Nickel 4 g Toby Opferkuch 4 h Lorenzo Ubaldi 3 i Avelino Vicente 8 j Alexander Voigt 7 k 0 CPPM, Aix-Marseille UniversiteĢ , CNRS-IN2P3, UMR 7346, 163 avenue de Luminy, 13288 Marseille Cedex 9

A constrained supersymmetric left-right model

We present a supersymmetric left-right model which predicts gauge coupling unification close to the string scale and extra vector bosons at the TeV scale. The subtleties in constructing a model which is in agreement with the measured quark masses and mixing for such a low left-right breaking scale are discussed. It is shown that in the constrained version of this model radiative ...