1. The problem statement, all variables and given/known data What are jets, and how do they provide evidence for quarks. 2. Relevant equations 3. The attempt at a solution High energy collisions between hadron can cause quarks within hadrons to fly apart from each other at high energies. Before being observed as quarks, these are converted to "jets of hadrons" - high energy streams of hadrons. Since particles that did not exist before the collision are created, the suggestion is then that hadrons have constituent particles, which we now called quarks. Does the above sound more or less correct or can it be made more precise??