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Searching for evidence of diquark states using lattice QCD simulations

R. Fukuda, P. de Forcrand

in 34th annual International Symposium on Lattice Field Theory

Contribution: pdf


In recent years, exotic hadrons called X, Y, Z which cannot be explained by the quark model have been found one
after another. The tetra-quark state, which is one of the typical scenarios to interpret the exotic state, is based on
the existence of a diquark state. The discovery of a pentaquark state at CERN in 2015
also makes a diquark state even more important. Therefore, it is considered that a diquark state plays
an important role in many kinds of QCD physics.
We discuss existence of such diquarks from the viewpoint of a first principle calculation.