$KN$ Sigma Terms, Strangeness in the Nucleon, and DA$Φ$NE

Details $KN$ Sigma Terms, Strangeness in the Nucleon, and DA$Φ$NE $KN$ Sigma Terms, Strangeness in the Nucleon, and DA$Φ$NE

1998-04-21

arxiv.org/abs/hep-ph/9804344v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, plain TeX, no figures, presented at the ``1998 LNF Spring School'', Frascati, Italy, 14 -- 18 April 1998

Scientific paper

Expanded and updated version of a talk originally presented at ``IVth Int. Symp. on Pion--Nucleon Physics and the Structure of the Nucleon'', Bad Honnef, 9--13 September 1991, originally published in $\pi N$ Newletter 6 (1992) 21--32. Table of contents: 1. Introduction. 2. $\sigma$--terms and ``measurements'' of the strange--quark scalar density of the nucleon. 3. Methods of extrapolation to $q^2 = t = \omega^2 = 0$: a subjective review: 3.1. The ``improved'' Altarelli--Cabibbo--Maiani method. 3.2. The Fubini--Furlan analysis of meson-nucleus scattering lengths. 3.2. The ``unitarized'' version of the Cheng--Dashen theorem. 4. Capabilities for a $\bar{K}N$--scattering experiment at DA$\Phi$NE. 5. ``Envoi''.

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