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arXiv · hep-ph/0409168

Diquarks as Inspiration and as Objects

Frank Wilczek
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Abstract

It is plausible that several of the most profound aspects of low-energy QCD dynamics are connected to diquark correlations, including: paucity of exotics (which is the foundation of the quark model and of traditional nuclear physics), similarity of mesons and baryons, color superconductivity at high density, hyperfine splittings, $ΔI = 1/2$ rule, and some striking features of structure and fragmentation functions. After a brief overview of these issues, I discuss how diquarks can be studied in isolation, both phenomenologically and numerically, and present approximate mass differences for diquarks with different quantum numbers. The mass-loaded generalization of the Chew-Frautschi formula provides an essential tool.

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Frank Wilczek. 2004-09-17. Diquarks as Inspiration and as Objects. https://doi.org/10.1142/9789812775344_0007

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