Strong decays of the light exotic 0+- and 2+- hybrid mesons.
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| Title: | Strong decays of the light exotic 0+- and 2+- hybrid mesons. |
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| Authors: | Farina, Christian1 (AUTHOR) cfarina@illinois.edu, Swanson, Eric S.2 (AUTHOR) swansone@pitt.edu |
| Source: | European Physical Journal C -- Particles & Fields. Feb2026, Vol. 86 Issue 2, p1-11. 11p. |
| Subjects: | Mesons, Hadron decay, Quantum chromodynamics, Gauge bosons, Quantum numbers, Excited state energies |
| 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 + - and 2 + - . These correspond to hybrid mesons in which the gluon couples to a q q ¯ pair in an P-wave and can therefore be identified as orbital excitations of the exotic 1 - + state. Interestingly, we find 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 + - → 2 1 S 0 + 1 1 S 0 , which is unique to our model. The 2 + - states are found to be narrow, as expected. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| 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 + - and 2 + - . These correspond to hybrid mesons in which the gluon couples to a q q ¯ pair in an P-wave and can therefore be identified as orbital excitations of the exotic 1 - + state. Interestingly, we find 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 + - → 2 1 S 0 + 1 1 S 0 , which is unique to our model. The 2 + - states are found to be narrow, as expected. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 14346044 |
| DOI: | 10.1140/epjc/s10052-026-15406-8 |
