Terry Elliott

Radiative corrections to Higgs boson masses in the next-to-minimal supersymmetric standard model

We perform a systematic study of radiative corrections to the masses of the Higgs bosons in the minimal supersymmetric standard model (MSSM) augmented by a single gauge singlet, the so-called next-to-minimal supersymmetric standard model (NMSSM). Our method is based on the one-loop effective potential and includes effects of top quark, squark, Higgs boson, and Higgsino loops. We discuss the renormalization group flows of Yukawa couplings and the upper bound on the lightest {ital CP}-even neutral Higgs boson mass as a function of the heavier top squark mass and top quark mass. We then give a general discussion of Higgs boson phenomenology including radiative corrections. We survey as much of the parameter space of the Higgs sector of the NMSSM as is practical, and analyze the full spectrum of Higgs boson masses and couplings in these regions of parameter space. Characteristic signatures of the NMSSM such as light charged bosons and weakly coupled neutral scalars are discussed, as are the relative sizes of the various radiative corrections. The MSSM is also discussed as a limiting case of the NMSSM for comparison.

Supersymmetric Higgs bosons at the limit

We obtain an improved upper bound on the lightest neutral CP-even Higgs boson mass from a low energy renormalisation-group analysis of the Higgs sector of the next-to-minimal supersymmetric standard model. We find

Squark contributions to Higgs boson masses in the next-to-minimal supersymmetric standard model

m_h< 145

Unification constraints in the next-to-minimal supersymmetric standard model

GeV for

Multiplicative synaptic normalization and a nonlinear Hebb rule underlie a neurotrophic model of competitive synaptic plasticity

m_t=90

Stable Competitive Dynamics Emerge from Multispike Interactions in a Stochastic Model of Spike-Timing-Dependent Plasticity

GeV, decreasing to

Synaptic and Temporal Ensemble Interpretation of Spike-Timing-Dependent Plasticity

m_h< 123

Discrete states of synaptic strength in a stochastic model of spike-timing-dependent plasticity

GeV for

Developmental robotics: manifesto and application

m_t=180

Temporal dynamics of rate-based synaptic plasticity rules in a stochastic model of spike-timing-dependent plasticity

GeV. We also discuss the light Higgs spectrum in the region of parameter space close to the upper bound.We obtain an improved upper bound on the lightest neutral CP-even Higgs boson mass from a low energy renormalisation-group analysis of the Higgs sector of the next-to-minimal supersymmetric standard model. We find