Top Quark Mass Measurement at TEVATRON and LHC Energies

This research work provides a review of a well heaviest known quark i.e. Top Quark (a fundamental particle ever observed). In hadron collisions, it produces in particle-antiparticle combination, which provides an important probe of the strong interactions i.e. one of the four fundamental interactions. Top quark was discovered in 1995 at Fermi lab, with a mass that is about as heavy as an entire atom of gold, still remains a topic of intense research interest. The top quark mass is one of the key parameter of SM of Particle Physics. Its exact value effects directly to the key predictions of the SM including the production rates of top at the Large Hadron Collider (LHC). This study presents an overview of the top quark mass measurement at TEVATRON to LHC including the precise measurement of the top given by CMS (Compact Muon Solenoid) experiment at LHC.