TY  - JOUR
AU  - Xu, S. S.
AU  - Cui, Z. F.
AU  - Chang, L.
AU  - Papavassiliou, J.
AU  - Roberts, C. D.
AU  - Zong, H. S.
PY  - 2019
DA  - 2019//
TI  - New perspective on hybrid mesons
T2  - Eur. Phys. J. A
JO  - European Physical Journal A
SP  - 113
EP  - 6pp
VL  - 55
IS  - 7
PB  - Springer
AB  - 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.
SN  - 1434-6001
UR  - https://arxiv.org/abs/1805.06430
UR  - https://doi.org/10.1140/epja/i2019-12805-4
DO  - 10.1140/epja/i2019-12805-4
LA  - English
N1  - WOS:000476540800001
ID  - Xu_etal2019
ER  -