2026-06-07T15:52:02Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/508112023-08-25T21:20:00Zcom_20.500.14352_14col_20.500.14352_15

Coulomb gauge approach to (qqg)over-bar hybrid mesons Llanes Estrada, Felipe José General, I. J. Cotanch, S. R. An effective Coulomb gauge Hamiltonian, H-eff, is used to calculate the light ( u (u) over barg), strange ( s (s) over barg) and charmed (c (c) over barg) hybrid meson spectra. For the same two parameter H-eff providing glueball masses consistent with lattice results and a good description of the observed u, d, s and c quark mesons, a large-scale variational treatment predicts that the lightest hybrid has J(PC) = 0(++) and mass 2.1 GeV. The lightest exotic 1(-+) state is just above 2.2 GeV, near the upper limit of lattice and flux tube predictions. These theoretical formulations all indicate that the observed 1(-+) pi(1)(1600) and, more clearly, pi(1)(1400) are not hybrid states. The Coulomb gauge approach further predicts that in the strange and charmed sectors, respectively, the ground state hybrids have 1(+-) with masses 2.1 and 3.8 GeV, while the. rst exotic 1( +) states are at 2.4 and 4.0 GeV. Finally, using our hybrid wavefunctions and the Franck-Condon principle, a novel experimental signature is presented to assist heavy hybrid meson searches. 2023-06-20T10:37:29Z 2023-06-20T10:37:29Z 2023-06-20T10:37:29Z 2007-07 journal article https://hdl.handle.net/20.500.14352/50811 1434-6044 10.1140/epjc/s10052-007-0298-3 eng FPA 2004-02602 2005-02327 PR27/05-13955-BSCH DE-FG02-97ER41048 DE-FG02-03ER41260 open access Springer