A comprehensive insight into small system at LHC energies

Abstract

Big Bang is the most widely accepted theory about the beginning of the universe. In the very first moments after the big bang the universe existed in an intensely hot and energetic state. It existed for an extremely short duration and contained the building blocks of all matter. As the universe expanded and cooled these combined to produce the matter in the state in which it exists today. QGP is the state of matter discussed above, it is made up of quarks and gluons. It is obviously impossible for us to go back in time to study the universe in its very early stages but it is possible to mimic the conditions of the early universe by colliding heavy nuclei such as gold or lead, at nearly the speed of light therefore creating a system 105 times hotter than the core of the Sun. These extreme conditions are sufficient for the possible formation of QGP. ALICE (A Large Ion Collider Experiment) is one of the four major experiments at LHC (Large Hardon Collider) dedicated to studying the above mentioned collisions which usually occur at GeV and TeV energies.