Summary
The sum iules for a pseudoscalar boson-nucleon system with gradient coupling are examined. Mass formulae are obtained in the form obtained by Johnson for a massive vector meson coupled to a conserved current.
Riassunto
Si esaminano le regole di somma per un sistema bosone pseudoscalare-nucleone con accoppiamento a gradiente. Si ottengono le formule di massa nella forma ottenuta da Johnson per un mesone vettoriale massiccio accoppiato ad una corrente conservata.
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References
H. Lehmann:Nuovo Cirnento,11, 343 (1954).
J. W. Moffat:Nucl. Phys.,13, 150 (1959).
K. Johnson:Nucl. Phys.,25, 435 (1961).
The quantity Aμ/f0 is the same as the partially conserved current introduced byM. Geli-Mann andM. Lévy:Nuovo Cimento,16, 705 (1960).
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Hellman, W.S. Sum rules for gradient-coupled theories. Nuovo Cim 34, 632–636 (1964). https://doi.org/10.1007/BF02750005
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DOI: https://doi.org/10.1007/BF02750005