Mesonic molecule

Source: Wikipedia, the free encyclopedia.

A mesonic molecule is a set of two or more

strong force.[1][2] Unlike baryonic molecules, which form the nuclei of all elements in nature save hydrogen-1, a mesonic molecule has yet to be definitively observed.[3] The X(3872) discovered in 2003 and the Z(4430) discovered in 2007 by the Belle experiment
are the best candidates for such an observation.

See also

References