  In Supersymmetry deviations from the SM signal strengths of the 125 GeV Higgs
boson can occur, because of possible SUSY contributions in diagrams with loops,
which leads to different deviations in signal strengths for processes with and
without loop diagrams. In the Next-to Minimal Supersymmetric Standard Model
(NMSSM) additional deviations may occur, because of the mixing with the
additional singlet-like Higgs boson and/or additional decays into pairs of
light particles, like neutralinos, pseudo-scalar Higgs bosons or singlet-like
Higgs bosons. In this paper we study these "genuine" NMSSM deviations in detail
to check not only their possible size, but also look for correlations or
anti-correlations with respect to other channels in the hope to find specific
patterns in the deviations as for the SUSY contributions, which occur
predominantly in processes including loops in the diagrams. The whole NMSSM
parameter space is sampled in a deterministic way. The novel scanning method is
discussed in detail in the Appendix. We found three different regions with
"genuine" NMSSM deviations, which are largely independent of the production
mode. What was surprising: some regions show negativ correlations between final
states with fermions and bosons meaning if the signal strengths for fermions
decrease the signal strengths for bosonic final states increase, while other
regions show positive correlations. The sign of the correlations is a strong
function of the mass difference between the observed 125 GeV Higgs boson and
the Higgs singlet, so looking for correlations could give useful hints about
the existence and mass of the singlet Higgs boson. The features of these
"genuine" NMSSM effects have been investigated in representative benchmark
points for each of the three regions where a single effect is dominant. These
benchmark points have been detailed in the Appendix.
