simpler

Physics

Lattice QCD method suggests simpler spectra of exotic XYZ hadrons

This diagram shows the contours of a complex energy surface. Each color corresponds to a different pair of D mesons. Although their shapes are very different, they revolve around a common vertex. This means that there is a single resonance coupled to all three channels. Credit: Jefferson Lab Illustration/David Wilson The elusive particles that first formed in the hot, dense…