Higgs mass and Branching Ratio from Non-Standard D-terms

by Andrey Katz (Harvard University)

Thursday 8 Nov 2012, 16:00 → 17:30 Europe/Rome

Aula Conversi (Dipartimento di Fisica - Ed. G. Marconi)

If one believes that SUSY is still a beyond the Standard Model physics candidate, he should address the problem of the higgs mass. With the Higgs mass ~125 GeV, we should accept that either the superpartners' scale is ~10 TeV or higher, or that SUSY is not minimal. I will review an idea of addressing the higgs mass problem via introducing an extended gauge sector and getting non-minimal higgs interactions from new D-terms. Unfortunately this solution to the higgs mass problem correlates the enhancement in the higgs mass with the enhancement in the decay rate of the higgs into b-quarks, which is not favored by current data. I will introduce a gauge extension of MSSM, where the SUSY Higgs fields are not vector-like and charged under two different gauge groups in the UV. Unlike in "standard D-terms" model, this charge assignment gives a negative contribution to h->b b decay rate, relaxing the tension with the data.

Slides rome_theory.pdf