期刊
EUROPEAN PHYSICAL JOURNAL A
卷 55, 期 7, 页码 -出版社
SPRINGER
DOI: 10.1140/epja/i2019-12805-4
关键词
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资金
- China Postdoctoral Science Foundation [2016M591809]
- Chinese Government Thousand Talents Plan for Young Professionals
- Generalitat Valenciana [Prometeo II/2014/066]
- Jiangsu Province Hundred Talents Plan for Professionals
- Jiangsu Province Natural Science Foundation of China [BK20180323]
- National Natural Science Foundation of China [11535005, 11690030, 11805097, 11847024]
- Nanjing University of Posts and Telecommunications Science Foundation [NY219032]
- Spanish MEyC [FPA2017-84543-P, SEV-2014-0398]
- U.S. Department of Energy, Office of Science, Office of Nuclear Physics [DE-AC02-06CH11357]
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], and gluon-antiquark, (q) over bar (g) = [g (q) over bar] 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)(q) over bar <-> q (q) over bar (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.
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