학술논문
Diquark Correlations in Hadron Physics: Origin, Impact and Evidence
Document Type
Working Paper
Author
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.; Salme, G.; Santopinto, E.; Segovia, J.; Syritsyn, S. N.; Takizawa, M.; Tomasi-Gustafsson, E.; Wein, P.; Wojtsekhowski, B. B.
Source
Subject
Language
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.
Comment: 113 pages, 41 figures, 8 tables
Comment: 113 pages, 41 figures, 8 tables