Diquark correlations in hadron physics : origin, impact and evidence
Abstract
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 therefrom moving toward a coherent, unified picture of hadron structure and the role that diquark correlations might play.
Main Authors
Format
Articles
Review article
Published
2021
Series
Subjects
Publication in research information system
Publisher
Elsevier BV
The permanent address of the publication
https://urn.fi/URN:NBN:fi:jyu-202012086978Käytä tätä linkitykseen.
Review status
Peer reviewed
ISSN
0146-6410
DOI
https://doi.org/10.1016/j.ppnp.2020.103835
Language
English
Published in
Progress in Particle and Nuclear Physics
Citation
- Barabanov, M.Yu., Bedolla, M.A., Brooks, W.K., Cates, G.D., Chen, C., Chen, Y., Cisbani, E., Ding, M., Eichmann, G., Ent, R., Ferretti, J., Gothe, R.W., Horn, T., Liuti, S., Mezrag, C., Pilloni, A., Puckett, A.J.R., Roberts, C.D., Rossi, P., . . . Wojtsekhowski, B.B. (2021). Diquark correlations in hadron physics : origin, impact and evidence. Progress in Particle and Nuclear Physics, 116, Article 103835. https://doi.org/10.1016/j.ppnp.2020.103835
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Funder(s)
Research Council of Finland
Funding program(s)
Research costs of Academy Research Fellow, AoF
Akatemiatutkijan tutkimuskulut, SA
Additional information about funding
Work supported by : Consejo Nacional de Ciencia y Tecnología (CONACyT), under the Estancias posdoctorales en el extranjero (EPE-2019) program; Chilean grants CONICYT PIA ACT-1413 and ACT-1409, BASAL FB-0821 and BASAL AFB 180002; FONDECYT 1080564, 1120953, and 1161642, and ECOS-CONICYT C12E04; the Helmholtz International Center for FAIR, within the LOEWE program of the State of Hesse; DFG grant FI 970/11-1; National Natural Science Foundation of China, under grant No. 11935017; FCT Investigator Grant IF/00898/2015; Academy of Finland, Project No. 320062; US National Science Foundation under grants PHY-1714133 and PHY-1812382; Jiangsu Province Hundred Talents Plan for Professionals; U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under contracts DE-AC05-06OR23177 and DE-SC0014230; Ministerio Español de Ciencia e Innovación, under grant No. PID2019-107844GB-C22; Junta de Andalucía, under contract No. Operativo FEDER Andalucía 2014–2020 UHU-1264517; European Union Horizon 2020 research and innovation programme, under grant agreement No. 824093; Deutsche Forschungsgemeinschaft (collaborative research centre SFB/TRR-55); and Jefferson Science Associates (JSA) Initiatives Fund Program grant No. 100-50-15 (FY2019). SS also acknowledges support by the RHIC Physics Fellow Program of the RIKEN BNL Research Center and by the National Science Foundation under CAREER Award PHY-1847893. PW expresses his gratitude to the Mainz Institute for Theoretical Physics (MITP) of the Cluster of Excellence PRISMA+ (Project ID 39083149) for its hospitality and support. MYB is grateful to Prof. Dr. Vladimir Kekelidze, Prof. Dr. Alexander Vodopyanov and Prof. Dr. Adam Kisiel for fruitful discussions on this topic. CM acknowledges the warm hospitality of INFN Sezione di Roma and the support of the NINPHA project.
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