Related Experiment Video
Updated: Apr 27, 2026

Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Selection rules for hadronic transitions of XYZ mesons
Eric Braaten1, Christian Langmack1, D Hudson Smith1
1Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA.
Abstract:
Many of the XYZ mesons discovered in the last decade can be identified as bound states of a heavy quark and antiquark in Born-Oppenheimer (BO) potentials defined by the energy of gluon and light-quark fields in the presence of static color sources. The mesons include quarkonium hybrids, which are bound states in excited flavor-singlet BO potentials, and quarkonium tetraquarks, which are bound states in BO potentials with light-quark+antiquark flavor. The deepest hybrid potentials are known from lattice QCD calculations. The deepest tetraquark potentials can be inferred from lattice QCD calculations of static adjoint mesons. Selection rules for hadronic transitions are derived and used to identify XYZ mesons that are candidates for ground-state energy levels in the BO potentials for charmonium hybrids and tetraquarks.
Related Concept Videos
Atomic Nuclei: Nuclear Spin State Population Distribution
Woodward–Hoffmann Selection Rules and Microscopic Reversibility
UV–Vis Spectroscopy: Molecular Electronic Transitions
¹H NMR Signal Multiplicity: Splitting Patterns
Interpreting ¹H NMR Signal Splitting: The (n + 1) Rule
¹H NMR: Complex Splitting
Splitting diagrams or splitting tree diagrams are routinely used to depict such complex couplings. While drawing splitting diagrams, the splitting with the larger coupling constant is usually applied...

