# How SUSY solves the hierarchy problem

1. Nov 17, 2009

### Cherry_pie

I'm currently doing a third year project (undergraduate) on supersymmetry, and am slightly confused as to just how the Higgs naturalness problem is solved through adding superparticles to the standard model. I've been advised to include discussion of radiative corrections, which, at most, all i know is they cancel out something which would otherwise send the Higgs mass to infinity. I would like to understand these corrections in greater detail, and be able to explain just how and why this solves the problem. Any help, or even some good links (ive exhausted wikipedia) aimed at people who arent already experts in this field would be greatly appreciated!!

2. Nov 21, 2009

### ansgar

3. Nov 21, 2009

### Cherry_pie

Thank you so much :-) I havent read through it all yet, but it certainly looks like it answers my problems, plus a few others!

4. Nov 22, 2009

### ansgar

yes it is a quite delicate set of lecture notes, better than "A Supersymmetry Primer" http://arxiv.org/abs/hep-ph/9709356

and "Supersymmetry in Elementary Particle Physics" http://arxiv.org/abs/0801.1928

the main point (as you have read i pressume) is that fermion and bosons contribute to the Higgs self-energy with opposite signs, and if we have supersymmetry, the fermions and bosons in SM have partners with opposite spin in SUSY which will contribute with opposite sign and this make $$\delta m_H^2$$ almost zero and not $$\Lambda ^2$$