Type 1 2HDM as Effective Theory of Supersymmetry

1. Supersymmetry and String Theory

– 1 – Supersymmetry , Part I ( Theory )

I.

Dilaton effective action with N = 1 supersymmetry

We clarify the structure of the four-dimensional low-energy effective action that encodes the conformal and U(1) R-symmetry anomalies in an N = 1 supersymmetric field theory. The action depends on the dilaton, τ , associated with broken conformal symmetry, and the Goldstone mode, β, of the broken U(1) R-symmetry. We present the action for general curved spacetime and background gauge field up t...

Natural Effective Supersymmetry

Much heavier sfermions of the first-two generations than the other superparticles provide a natural explanation for the flavor and CP problems in the supersymmetric standard model (SUSY SM). However, the heavy sfermions may drive the mass squareds for the light third generation sfermions to be negative through two-loop renormalization group (RG) equations, breaking color and charge. Introducing...

Supersymmetry : Theory

If supersymmetric particles are discovered at high-energy colliders, what can we hope to learn about them? In principle, the properties of supersymmetric particles can give a window into the physics of grand unification, or of other aspects of interactions at very short distances. In this article, I sketch out a systematic program for the experimental study of supersymmetric particles and point...