Münster 2017 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 86: Higgs Physik (Theorie) 2

T 86.4: Vortrag

Mittwoch, 29. März 2017, 17:30–17:45, VSH 06

Higgs-boson masses, mixing and decays in the NMSSM — Florian Domingo^1,2, Peter Drechsel³, and •Sebastian Paßehr⁴ — ¹Instituto de Física Teórica (UAM/CSIC), Universidad Autónoma de Madrid, Cantoblanco, E-28049 Madrid, Spain — ²Instituto de Física de Cantabria (CSIC-UC), E-39005 Santander, Spain — ³II. Institute for Theoretical Physics, University of Hamburg, D-22761 Hamburg, Germany — ⁴Deutsches Elektronensynchrotron DESY, Notkestraße 85, D-22607 Hamburg, Germany

The Next-to-Minimal Supersymmetric Standard Model (NMSSM) catches increasing interest in particle physics due to its rich phenomenology. In addition to the two Higgs doublets of the MSSM a Higgs singlet enriches the particle spectrum leading to seven physical Higgs bosons. Precise predictions for the masses and mixing of these Higgs bosons is of foremost importance to validate the NMSSM. Different with respect to the MSSM is also the possibility for CP mixing in the Higgs sector at the tree level. Further constraints arise from the decays of these particles and the associated crosssections.

I will present the Higgs-boson mass spectrum for selected scenarios and explain the mixing of the Higgs bosons at higher orders in perturbation theory in the NMSSM with complex parameters. Furthermore I will report on the prediction of important decays. Finally a summary about the status of implementing all these results in the public code FeynHiggs will be given.