Dresden 2013 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 15: Beyond the Standard Model (Theorie) 2
T 15.6: Vortrag
Montag, 4. März 2013, 18:00–18:15, WIL-A124
Natural NMSSM Higgs Bosons — Stephen F. King1, Margarete Mühlleitner2, Roman Nevzorov3, and •Kathrin Walz2 — 1School of Physics and Astronomy, University of Southampton — 2Institute for Theoretical Physics, Karlsruhe Institute of Technology — 3Institute for Theoretical and Experimental Physics, Moscow
The Higgs sector of the Next-to Minimal Supersymmetric Extension of the Standard Model (NMSSM) features five neutral Higgs bosons. Compared to the MSSM it is extended by one additional complex singlet field. The discovery of a Higgs-like boson at the LHC last summer opens up the exciting possibility to consider the idea that this might actually be one of the NMSSM Higgs bosons.
We study the phenomenology of the NMSSM Higgs sector requiring the presence of a CP-even Higgs boson with a mass close to 126 GeV. To this end we perform a parameter scan and investigate the observable Higgs cross sections into the final states γγ, WW, ZZ, bb and ττ. Our focus is on an enhanced rate into γγ. We discuss where such an enhancement can originate from and study the correlations between the different channels. Our scenarios feature light stop masses, which leads to low fine-tuning, and comply nicely with the LHC results.