Properties of proton-proton collision and comparing event generators by multi-jet events

There are many regimes to be deeply investigated in the field of high energy physics and particles physics. The Large Hadron Collider (LHC) in Geneva, Switzerland is built to study those physics. A lot of Monte Carlo event generators are constructed to simulate the Standard Model. One of purposes of the LHC is obtaining data from real experiment to test the predictions of all Monte Carlo event generators. There are two main parts in this articles. First, the basic properties of proton-proton collision will be shown, with discussion of problems arose from jet algorithms. The second part compares different event generators with detailed discussion.