Basic concepts for QCD and collider physics
Abstract:
We review basic concepts for QCD and collider physics. In order to study LHC physics we have to understand strong interactions arising from QCD, which gives huge corrections to our interesting signals. Fortunately the strong interactions are controllable and can be computed at the high energy scale while the interactions at the low energy still remain hardly predictable. So it is important to separate the short distance and long distance strong interactions, which can be done in the framework QCD factorization. For the hadronic scattering such as pp collision, the parton distribution function is responsible for the long distance interactions. We also consider how it can be applied to physical observables in the hadron collider.