Kilian Nickel

Two-loop Higgs mass calculations in supersymmetric models beyond the MSSM with SARAH and SPheno

We present an extension to the Mathematica package SARAH which allows for Higgs mass calculations at the two-loop level in a wide range of supersymmetric (SUSY) models beyond the MSSM. These calculations are based on the effective potential approach and include all two-loop corrections which are independent of electroweak gauge couplings. For the numerical evaluation Fortran code for SPheno is generated by SARAH. This allows the prediction of the Higgs mass in more complicated SUSY models with the same precision that most state-of-the-art spectrum generators provide for the MSSM.

Two-loop corrections to the Higgs masses in the NMSSM

We discuss the impact of the two-loop corrections to the Higgs mass in the NMSSM beyond

New bounds on trilinear R-parity violation from lepton flavor violating observables

O(\alpha_S(\alpha_b + \alpha_t))

Precise determination of the Higgs mass in supersymmetric models with vectorlike tops and the impact on naturalness in minimal GMSB

. For this purpose we use the combination of the public tools SARAH and SPheno to include all contributions stemming from superpotential parameters. We show that the corrections in the case of a heavy singlet are often MSSM-like and reduce the predicted mass of the SM-like state by about 1 GeV as long as

On the two-loop corrections to the Higgs mass in trilinear R-parity violation

\lambda

The Higgs mass in the MSSM at two-loop order beyond minimal flavour violation

is moderately large. For larger values of

Hunting for neutral, long-lived exotica at the LHC using a missing transverse energy signature.

\lambda

Precision tools and models to narrow in on the 750 GeV diphoton resonance

the additional corrections can increase the SM-like Higgs mass. If a light singlet is present the additional corrections become more important even for smaller values of

Generic two-loop Higgs mass calculation from a diagrammatic approach

\lambda

Full 1-loop calculation of BR

and can even dominate the ones involving the strong interaction. In this context we point out that important effects are not reproduced quantitatively when only including