In nature, quarks and gluons are confined inside composite particles called hadrons. Examples of hadrons include the proton, the neutron, and the pion. Although dozens of different hadrons have been seen experimentally, others, such as those in categories called "exotic mesons" and "hybrid mesons", are still being actively sought. The masses and interactions of these new particles, if they can exist in nature at all, remain unknown.
The theory describing quarks and gluons is called quantum chromodynamics (QCD) and it can be simulated through computational methods implemented on a four-dimensional space-time lattice. An overview of this procedure will be presented, and aspects of the lattice QCD search for mesons will be discussed.