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Title: New perspective on hybrid mesons

Abstract

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.

Authors:
 [1];  [2];  [3];  [4];  [5];  [2]
  1. Nanjing Univ. of Posts and Telecommunications, Nanjing, Jiangsu (China). School of Science
  2. Nanjing Univ. (China). School of Physics
  3. Nankai Univ., Tianjin (China). School of Physics
  4. Univ. of Valencia and CSIC, Valencia (Spain). Dept. of Theoretical Physics and IFIC
  5. Argonne National Lab. (ANL), Argonne, IL (United States). Physics Division
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26); National Natural Science Foundation of China (NNSFC)
OSTI Identifier:
1563919
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
European Physical Journal. A
Additional Journal Information:
Journal Volume: 55; Journal Issue: 7; Journal ID: ISSN 1434-6001
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Xu, Shu-Sheng, Cui, Zhu-Fang, Chang, Lei, Papavassiliou, Joannis, Roberts, Craig D., and Zong, Hong-Shi. New perspective on hybrid mesons. United States: N. p., 2019. Web. doi:10.1140/epja/i2019-12805-4.
Xu, Shu-Sheng, Cui, Zhu-Fang, Chang, Lei, Papavassiliou, Joannis, Roberts, Craig D., & Zong, Hong-Shi. New perspective on hybrid mesons. United States. doi:10.1140/epja/i2019-12805-4.
Xu, Shu-Sheng, Cui, Zhu-Fang, Chang, Lei, Papavassiliou, Joannis, Roberts, Craig D., and Zong, Hong-Shi. Mon . "New perspective on hybrid mesons". United States. doi:10.1140/epja/i2019-12805-4. https://www.osti.gov/servlets/purl/1563919.
@article{osti_1563919,
title = {New perspective on hybrid mesons},
author = {Xu, Shu-Sheng and Cui, Zhu-Fang and Chang, Lei and Papavassiliou, Joannis and Roberts, Craig D. and Zong, Hong-Shi},
abstractNote = {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, qg = [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.},
doi = {10.1140/epja/i2019-12805-4},
journal = {European Physical Journal. A},
number = 7,
volume = 55,
place = {United States},
year = {2019},
month = {7}
}

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