b-tagging is a method of jet flavor tagging used in modern particle physics experiments.
b-tagging is important because: The methods for b-tagging are based on the unique features of b-jets.
These include: None of the methods of identifying b-jets are foolproof, and modern particle physics experiments must devote significant time to studying how often they successfully identify b-jets and how often they misidentify other jets.
Monte Carlo simulations are used to develop and evaluate the performance of tagging algorithms.
Martin, B.R; Shaw, G. Particle Physics (3 ed.).