Strong decays of the light exotic $$0^{+-}$$ and $$2^{+-}$$ hybrid mesons
Abstract
Abstract A model of hybrid meson structure based on the QCD Hamiltonian in Coulomb gauge and a single constituent quasigluon is applied to the computation of hadronic decays of mesons with exotic quantum numbers, $$0^{+-}$$ 0 + - and $$2^{+-}$$ 2 + - . These correspond to hybrid mesons in which the gluon couples to a $$q\bar{q}$$ q q ¯ pair in an P -wave and can therefore be identified as orbital excitations of the exotic $$1^{-+}$$ 1 - + state. Interestingly, we find $$0^{+-}$$ 0 + - states to be narrow, contrary to what was found by previous calculations. This is primarily due to the suppression of the decay mode $$0^{+-}\rightarrow 2^1S_0+1^1S_0$$ 0 + - → 2 1 S 0 + 1 1 S 0 , which is unique to our model. The $$2^{+-}$$ 2 + - states are found to be narrow, as expected.
Fields of Study & Subjects
Quantum Chromodynamics and Particle Interactions
High-Energy Particle Collisions Research
Cold Atom Physics and Bose-Einstein Condensates
Publication details
- Journal / source
- The European Physical Journal C
- Publisher
- Springer Science and Business Media LLC
- Volume
- 86
- Issue
- 2
- Publication date
- 26 February 2026
- Language
- EN