https://doi.org/10.1140/epja/i2019-12805-4
Letter
New perspective on hybrid mesons
1
School of Science, Nanjing University of Posts and Telecommunications, 210023, Nanjing, Jiangsu, China
2
School of Physics, Nanjing University, 210093, Nanjing, Jiangsu, China
3
School of Physics, Nankai University, 300071, Tianjin, China
4
Department of Theoretical Physics and IFIC, University of Valencia and CSIC, E-46100, Valencia, Spain
5
Physics Division, Argonne National Laboratory, 60439, Argonne, IL, USA
* e-mail: cdroberts@anl.gov
Received:
12
June
2019
Accepted:
14
June
2019
Published online:
22
July
2019
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, 
, and gluon-antiquark, 
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 
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.
© The Author(s), 2019
