New perspective on hybrid mesons

Xu, Shu-Sheng; Cui, Zhu-Fang; Chang, Lei; Papavassiliou, Joannis; Roberts, Craig D.; Zong, Hong-Shi

doi:10.1140/epja/i2019-12805-4

Title: New perspective on hybrid mesons

Journal Article · Mon Jul 22 00:00:00 EDT 2019 · European Physical Journal. A

DOI:https://doi.org/10.1140/epja/i2019-12805-4· OSTI ID:1563919

Xu, Shu-Sheng ^[1]; Cui, Zhu-Fang ^[2]; Chang, Lei ^[3]; Papavassiliou, Joannis ^[4]; Roberts, Craig D. ^[5]; Zong, Hong-Shi ^[2]

Nanjing Univ. of Posts and Telecommunications, Nanjing, Jiangsu (China). School of Science
Nanjing Univ. (China). School of Physics
Nankai Univ., Tianjin (China). School of Physics
Univ. of Valencia and CSIC, Valencia (Spain). Dept. of Theoretical Physics and IFIC
Argonne National Lab. (ANL), Argonne, IL (United States). Physics Division

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, $$\overline{q}_g$$= [g$$\overline{q}$$] 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 $$q_g\overline{q}$$ ↔$$q\overline{q}_g$$ 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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Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP); National Natural Science Foundation of China (NSFC)

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1563919

Journal Information:: European Physical Journal. A, Vol. 55, Issue 7; ISSN 1434-6001

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 19 works

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