Sgoldstino-Higgs mixing in models with low-scale supersymmetry breaking

Understand

We consider a supersymmetric extension of the Standard Model with low-scale supersymmetry breaking.

• Besides usual superpartners it contains additional chiral goldstino supermultiplet whose scalar components - sgoldstinos can mix with scalars from the Higgs sector of the model.
• We show that this mixing can have considerable impact on phenomenology of the lightest Higgs boson and scalar sgoldstino.
• In particular, the latter can be a good candidate for explanation of 2-sigma LEP excess with mass around 98 GeV.