---
abstract: 'This report summarizes the progress in SUSY studies performed since the last International Linear Collider Workshop in Paris (LCWS04).'
author:
- Jan Kalinowski
title: |
    \
    SUSY Studies
---

INTRODUCTION
============

The Standard Model provides a very good and economical description for all experimental data. However, there is a number of key physics questions that the Standard Model (SM) is not able to address, e.g.:

-   What is the origin of mass? Is the Higgs mechanism, or its variants, behind the gauge symmetry breaking?\

-   What is the origin of matter-antimatter asymmetry?\

-   What are the properties of neutrinos? [^1]\

-   Do all forces, including gravity, unify?\

-   What is the nature of dark matter, dark energy?

What is interesting and stimulating for our Working Group is that supersymmetry (SUSY) may turn out to be related to all these questions. Moreover, SUSY can experimentally be tested at future colliders: Large Hadron Collider (LHC) and International Linear Collider (ILC). In particular, the ILC may provide essential tools for discovery answers. Discovering supersymmetry would mean a grand revolution in particle physics.

Why supersymmetry is so attractive? Technically, of the many motivations for the supersymmetric extension of the SM, perhaps the 