Year: 2019
Type: article
Abstract: We introduce a novel approach to the hybrid-meson (valence-gluon+quark+antiquark) bound-state problem in relativistic quantum field theory. Exploiting the existence of strong two-body correlations in the gluon-quark, $q_{g} = [gq]$ qg=[gq], and gluon-antiquark, $ \bar{q}_{g} = [g\bar{q}]$ q¯g=[gq¯] channels, we argue that a sound description of hybrids can be obtained by solving a coupled pair of effectively two-body equations; and, consequently, that hybrids may be viewed as highly correlated $ q_{g} \bar{q} \leftrightarrow q \bar{q}_{g}$ qgq¯↔qq¯g bound states. Analogies may be drawn between this picture of hybrid structure and that of baryons, in which diquark (quark+quark) correlations play a key role. The potential of this formulation is illustrated by calculating the spectrum of light-quark isovector hybrid mesons.
Source: The European Physical Journal A
Authors: Shu-Sheng Xu, Zhu-Fang Cui, Lei Chang, Joannis Papavassiliou, Craig D. Roberts, Hong-Shi Zong
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $2,160
Funders: U.S. Department of Energy, National Natural Science Foundation of China, China Postdoctoral Science Foundation, Government of Jiangsu Province, Generalitat Valenciana, Natural Science Foundation of Jiangsu Province, Nanjing University of Posts and Telecommunications, Nanjing University, Recruitment Program of Global Experts, Office of Science, Nuclear Physics
Awards: G102163711, G1238244337, G1315157267, 有关强作用物质性质和结构的研究, G1760870335, G2287611682, G2551805863, G262962599, G2896472831, G3599112450, G3638539408, G3924017170, G498139845, G5106849484, G5134557385, G5389594062, G5523144874, G583233779, G6848031779, G6910126085, G6918803902, G7368700025, G7699029330, G8107671693, G8567346652, G880751848, G969889393, G993149817
OpenAlex ID: W2804146218