Phenomenology of the inflation-inspired NMSSM at the electroweak scale

Hollik, Wolfgang; Liebler, Stefan; Weiglein, Georg; Paßehr, Sebastian; Moortgat-Pick, Gudrid

Preprint/Report

PUBDB-2018-03675

Phenomenology of the inflation-inspired NMSSM at the electroweak scale

Hollik, W. (Corresponding author)DESY* ; Liebler, S. ; Moortgat-Pick, G.DESY* ; Paßehr, S. ; Weiglein, G.DESY*

2018

[10.3204/PUBDB-2018-03675]

This record in other databases:

Please use a persistent id in citations: doi:10.3204/PUBDB-2018-03675

Report No.: DESY-17-075; KA-TP-26-2018; arXiv:1809.07371

Abstract: The concept of Higgs inflation can be elegantly incorporated in the Next-to-Minimal Supersymmetric Standard Model (NMSSM). A linear combination of the two Higgs-doublet fields plays the role of the inflaton which is non-minimally coupled to gravity. This non-minimal coupling appears in the low-energy effective superpotential and changes the phenomenology at the electroweak scale. While the field content of the inflation-inspired model is the same as in the NMSSM, there is another contribution to the $\mu$ term in addition to the vacuum expectation value of the singlet. We explore this extended parameter space and point out scenarios with phenomenological differences compared to the pure NMSSM. A special focus is set on the electroweak vacuum stability and the parameter dependence of the Higgs and neutralino sectors. We highlight regions which yield a SM-like $125\,$GeV Higgs boson compatible with the experimental observations and are in accordance with the limits from searches for additional Higgs bosons. Finally, we study the impact of the non-minimal coupling to gravity on the Higgs mixing and in turn on the decays of the Higgs bosons in this model.

Contributing Institute(s):