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KN sigma terms from kaon-nucleus scattering lengths

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Zeitschrift für Physik C Particles and Fields

Abstract

K −-nucleus scattering lengths have been analysed in terms of Fubini-Furlan sum rules (supplemented with a gray-sphere model to describe the Λ(1405) absorption inside the nucleus), which extrapolate the current-algebra results to the physical threshold. A value of about 600 MeV is obtained for theI t =0KN sigma term, consistent with large violations of the Zweig rule in the scalar-isoscalarN \(\bar N\) system att=0.

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Author notes

  1. Paolo M. Gensini

    Present address: Dipartimento di Fisica, Università degli Studi, I-73100, Lecce, Italy

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  1. Institute of Theoretical Physics, Stanford University, 94305, Stanford, California, USA

    Paolo M. Gensini

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I research supported byINFN and by a grant from Fondazione Della Riccia

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Gensini, P.M. KN sigma terms from kaon-nucleus scattering lengths. Z. Phys. C - Particles and Fields 14, 319–324 (1982). https://doi.org/10.1007/BF01578653

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