Bonn 2010 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 18: Beyond the Standard Model (Theorie) II
T 18.1: Vortrag
Dienstag, 16. März 2010, 16:45–17:00, HG XIV
Light charged Higgs in the NMSSM — •Lisa Zeune1, Oscar Stal2, Johan Rathsman2, and Gunnar Ingelman2 — 1II. Physikalisches Institut Universit"at G"ottingen — 2High-Energy Physics, Dept. of Physics and Astronomy, Uppsala University
The observation of a charged scalar particle would be the clear proof of physics beyond the standard model. But the experimental signature - and related to this the needed search strategy - is highly dependent of the assumed model.
The next-to-minimal supersymmetric standard model (NMSSM) is an attractive extension of the MSSM, that differs from MSSM by the introduction of a singlet superfield. Some of the shortcomings like the µ-problem of the MSSM are solved naturally in the NMSSM.
The additional singlet field leads to an extended Higgs sector.
In the NMSSM the phenomenology of the charged Higgs boson differs considerably from its phenomenology in the minimal model with only two Higgs doublets.
A study about light charged Higgs bosons in the NMSSM with focus on the region with a charged Higgs mass below the MSSM lower bound of around 120 GeV is presented.
Beside all theoretical constraints and constraints from collider searches, flavor physics constraints are applied to find allowed points in the parameter region yielding a light charged Higgs boson. Further the decays of light charged Higgs are studied and detection prospects at the LHC are discussed.