Journal
PROGRESS IN PARTICLE AND NUCLEAR PHYSICS
Volume 116, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.ppnp.2020.103835
Keywords
Baryon spectra and structure; Diquark correlations; Dyson-Schwinger equations; Lattice quantum chromodynamics; Quantum chromodynamics; Quark models
Categories
Funding
- Consejo Nacional de Ciencia y Tecnologia (CONACyT), Mexico
- Agencia Nacional de Investigacion y Desarrollo (ANID), Chile [PIA ACT-1413, ACT-1409, FB-0821, AFB180002]
- FONDECYT, Chile [1080564, 1120953, 1161642]
- ANID, Chile [C12E04]
- Helmholtz International Center for FAIR, Germany, within the LOEWE program of the State of Hesse
- DFG, Germany [FI 970/11-1]
- National Natural Science Foundation of China [11935017]
- FCT, USA [IF/00898/2015]
- Academy of Finland [320062]
- US National Science Foundation [PHY-1714133, PHY-1812382]
- Jiangsu Province Hundred Talents Plan for Professionals, China
- U.S. Department of Energy, Office of Science, USA, Office of Nuclear Physics [DE-AC05-06OR23177, DE-SC0014230]
- Ministerio Espanol de Ciencia e Innovacion, Spain [PID2019-107844GB-C22]
- Junta de Andalucia, Spain [20142020 UHU-1264517]
- European Union Horizon 2020 research and innovation programme [824093]
- Deutsche Forschungsgemeinschaft, Germany (collaborative research centre) [SFB/TRR-55]
- Jefferson Science Associates (JSA) Initiatives Fund, USA Program [100-50-15]
- RHIC Physics Fellow Program of the RIKEN BNL Research Center
- National Science Foundation, USA under CAREER Award [PHY-1847893]
- Mainz Institute for Theoretical Physics (MITP), Germany of the Cluster of Excellence PRISMA+ [39083149]
- NINPHA project
- U.S. Department of Energy (DOE) [DE-SC0014230] Funding Source: U.S. Department of Energy (DOE)
Ask authors/readers for more resources
In the past decade, there has been a significant shift in understanding the internal structure of hadrons, with new theoretical techniques and experimental findings suggesting that soft quark+quark (diquark) correlations play a crucial role in hadron physics. These correlations are believed to be a necessary consequence of dynamical chiral symmetry breaking and may be critical for the formation of exotic tetra- and penta-quark hadrons.
The last decade has seen a marked shift in how the internal structure of hadrons is understood. Modern experimental facilities, new theoretical techniques for the continuum bound-state problem and progress with lattice-regularised QCD have provided strong indications that soft quark+quark (diquark) correlations play a crucial role in hadron physics. For example, theory indicates that the appearance of such correlations is a necessary consequence of dynamical chiral symmetry breaking, viz. a corollary of emergent hadronic mass that is responsible for almost all visible mass in the universe; experiment has uncovered signals for such correlations in the flavour-separation of the proton's electromagnetic form factors; and phenomenology suggests that diquark correlations might be critical to the formation of exotic tetra- and penta-quark hadrons. A broad spectrum of such information is evaluated herein, with a view to consolidating the facts and there from moving toward a coherent, unified picture of hadron structure and the role that diquark correlations might play. (C) 2020 Published by Elsevier B.V.
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