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Remarks on the high-momentum properties of time-orderedV andA currents

Эамечания о свойствах упорядоченных по времениV иA токов при больщих импульсах

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Il Nuovo Cimento A (1965-1970)

Summary

Assuming a high-momentum equality of certain time-ordered products of vector and axial vector currents between low-lying states, we obtain several interesting results. Matrix elements between vacuum states lead to Weinberg-type sum rules previously obtained by others. Application to matrix elements between the vacuum and the ρ+-meson leads to information on the isovector form factors of the ρ+.

Riassunto

Si ottengono diversi risultati interessanti postulando una forte eguaglianza di quantità di moto in certi prodotti ordinati nel tempo di correnti vettoriali e vettoriali assiali fra stati di bassa energia. Con gli elementi di matrice fra gli stati del vuoto si ottengono regole di somma del tipo di Weinberg già ottenute da altri. Applicandole agli elementi di matrice fra il vuoto ed il mesone ρ+ si ottengono informazioni sui fattori di forma isovettoriali del ρ+.

Реэуме

Предполагая при больщих импульсах равенство некоторых упорядоченных по времени проиэведений векторных и аксиально-векторных токов между ниэко лежашими состояниями, получаются несколько интересных Реэультатов. Матричные Элементы между вакуумными состояниями приводят к правилам сумм вейнберговского типа, предварительно полученные другими авторами. Испольэование матричных Элементов между вакуумом и ρ+-меэоном дает информацию относительно иэовекторных форм-факторов ρ+-меэона.

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Grotch, H., Kazes, E. Remarks on the high-momentum properties of time-orderedV andA currents. Nuovo Cimento A (1965-1970) 59, 444–452 (1969). https://doi.org/10.1007/BF02753156

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  • DOI: https://doi.org/10.1007/BF02753156

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