Does LEP prefer the NMSSM ?

Higgs Sector in Extensions of the Minimal Supersymmetric Standard Model

Extensions of the minimal supersymmetric standard model (MSSM) with additional singlet scalar fields solve the important μ-parameter fine-tuning problem of the MSSM.We compute and compare the neutral Higgs boson mass spectra, including one-loop corrections, of the following MSSM extensions: next-tominimal supersymmetric standard model (NMSSM), the nearly-minimal supersymmetric standard model (n...

Naturalness of EWSB in NMSSM and Higgs at 100 GeV

Naturalness of electroweak symmetry breaking in the next-to-minimal supersymmetric model points to scenarios in which the lightest CP-even Higgs boson has SM-like ZZh coupling and mass mh ∼ 100 GeV and decays partly via h → bb̄ but dominantly into two CP-odd Higgs bosons, h → aa, where ma < 2mb so that a → τ+τ− (or light quarks and gluons) decays are dominant. These preferred scenarios correlate...

Higgs bosons at 98 and 125 GeV at LEP and the LHC

We discuss NMSSM scenarios in which the lightest Higgs boson h1 is consistent with the small LEP excess at ∼ 98 GeV in e+e− → Zh with h→ bb and the heavier Higgs boson h2 has the primary features of the LHC Higgs-like signals at 125 GeV, including an enhanced γγ rate. Verification or falsification of the 98 GeV h1 may be possible at the LHC during the 14 TeV run. The detection of the other NMSS...

Updated Constraints from B Physics on the MSSM and the NMSSM

We update constraints from B physics observables on the parameters of the MSSM and the NMSSM, combining them with LEP constraints. Presently available SM and Susy radiative corrections are included in the calculations, which will be made public in the form of a Fortran code. Results for the tanβ and MH± dependence of BR(B̄ → Xsγ) are presented, as well as constraints on the NMSSM specific case o...

Does Nature Prefer Heterocycles?