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Physical photo- and electroproduction at threshold by current-algebra sum rules

Физическое фото- и электро-рождение на пороге на основе правил сумм алгебры токов

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Il Nuovo Cimento A (1965-1970)

Summary

By saturation of equal-time commutators of current algebra and field algebra, expressions for physical electroproduction amplitudes are deduced. They contain electromagnetic and axial form factors plus terms of orderμ 2 (pion mass). A detailed evaluation of those corrections 3 is discussed together with the comparison with experiments.

Riassunto

Dalla saturazione di commutatori a tempi uguali dell'algebra delle correnti e dell'algebra dei campi si ricavano le espressioni di certe ampiezze fisiche di elettroproduzione. Esse contengono fattori di forma elettromagnetici e assiali più termini di ordine superiore nella massa del pione. Si discute una valutazione dettagliata di queste correzioni e si fanno dei confronti con i dati sperimentali.

Резюме

Посредством насыщения коммутаторов алгебры токов и алгебры полей при равных временах, выводятся выражения для физических амплитуд электророждения. Они содержат электромагнитные и аксиальные форм-факторы плюс члены, порядкаμ 2 (масса пиона). Обсуждается подробное 3 развитие этих поправок, и проводится сравнение с экспериментом.

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References

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Authors and Affiliations

  1. Istituto di Fisica Teorica dell'Università, Trieste

    G. Furlan, N. Paver & C. Verzegnassi

Authors
  1. G. Furlan
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  2. N. Paver
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  3. C. Verzegnassi
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Work supported in part by Istituto Nazionale di Fisica Nucleare.

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Furlan, G., Paver, N. & Verzegnassi, C. Physical photo- and electroproduction at threshold by current-algebra sum rules. Nuovo Cimento A (1965-1970) 62, 519–554 (1969). https://doi.org/10.1007/BF02753009

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