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A field theory for composite particles (Hadrons) — I

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Il Nuovo Cimento A (1965-1970)

Summary

Field theories of quarks (QCD) have been found to be difficult to handle. A major component of the trouble is the confining nature of strong interactions. Hence, it is proposed that the confinement of quarks in hadrons be treated as a direct interaction. But scattering interactions between hadrons can still be via fields. This requires that the total hadron wave function with directly interacting component quarks be second-quantized. A simple case of spin-zero quarks is described before the discussion of spin-half quarks. Such a theory is ideal for hadron phenomenology. But there is also a possibility that it might develop into a more fundamental theory. In that case it could improve the understanding of the existing theory of QCD.

Riassunto

Si è trovato che le teorie dei campi di quark sono difficili da trattare. La componente maggiore di questa difficoltà consiste nella natura confinante delle interazioni forti. Quindi si propone di trattare il confinamento dei quark negli adroni come interazione diretta. Ma le interazioni di scattering tra adroni possono anche verificarsi tra campi. CiÒ richiede che la funzione d’onda adronica totale con quark componenti direttamente interagenti sia quantizzata per seconda. Si descrive un caso semplice di quark a spin zero prima di discutere dei quark con spin 1/2. Questa teoria è ideale per la fenomenologia adronica. Ma c’è anche la possibilità che si possa sviluppare in una teoria piÚ fondamentale. In quel caso migliorerebbe la comprensione della teoria esistente della QCD.

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Biswas, T. A field theory for composite particles (Hadrons) — I. Nuov Cim A 95, 97–110 (1986). https://doi.org/10.1007/BF02903034

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