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Meson-nucleus scattering lengths and sigma-terms

Длины мезон-ядерного рассеяния и Σ-члены. — II: К-ядерная система

II: The K-nucleus system

  • Published:
Il Nuovo Cimento A (1965-1970)

An Erratum to this article was published on 01 May 1981

Summary

A formula for K-nucleus scattering lengths is derivedà la Fubini-Furlan from current algebra and PCAC. From a fit to kaonic atom and scattering data we estimate Σ0(KN)≃ (512 ± 101) MeV and Σ1 (KN)⩽ 78 MeV, consistent with very small nonstrange “current” quark masses.

Riassunto

Si deriva una formula per le lunghezze di diffusione K-nucleo dall'algebra delle correnti e dalla PCAC con il metodo di Fubini e Furlan. Da un adattamento su dati di diffusione e da atomi K-mesici si ottengono le stime Σ0(KN)≃ (512 ± 101)MeV e Σ1 (KN)⩽ 78 MeV, in accordo con masse “di corrente” molto piccole per i quark non strani.

Резюме

Выводится формула для длин К-ядерного рассеяния а ля фубинифурлана из алгебры токов и PCAC. Из подгонки данных для каонного атома и рассеяния мы оцениваем Σ0(KN)≃ (512 ± 101) МэВ и Σ1 (KN)⩽ 78 MeV МэВ, что согласуется с очень малыми массами нестрнных, “токовых” кварков.

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Research supported by Istituto Nazionale di Fisica Nucleare.

Address after November 1st, 1980: Physics Department, Stanford University, Stanford, Cal. 94305.

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An erratum to this article is available at http://dx.doi.org/10.1007/BF02902673.

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Gensini, P.M. Meson-nucleus scattering lengths and sigma-terms. Nuov Cim A 60, 234–246 (1980). https://doi.org/10.1007/BF02902460

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  • DOI: https://doi.org/10.1007/BF02902460

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