%0 Journal Article
%T New perspective on hybrid mesons
%A Xu, S. S.
%A Cui, Z. F.
%A Chang, L.
%A Papavassiliou, J.
%A Roberts, C. D.
%A Zong, H. S.
%J European Physical Journal A
%D 2019
%V 55
%N 7
%I Springer
%@ 1434-6001
%G English
%F Xu_etal2019
%O WOS:000476540800001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4088), last updated on Mon, 19 Aug 2019 07:02:09 +0000
%X 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.
%R 10.1140/epja/i2019-12805-4
%U https://arxiv.org/abs/1805.06430
%U https://doi.org/10.1140/epja/i2019-12805-4
%P 113-6pp