$KN$ Sigma Terms, Strangeness in the Nucleon, and DA$Φ$NE
Abstract
Description
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 $πN$ Newletter 6 (1992) 21--32.
Table of contents:
1. Introduction.
2. $σ$--terms and ``measurements'' of the strange--quark scalar density of the nucleon.
3. Methods of extrapolation to $q^2 = t = ω^2 = 0$: 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$Φ$NE.
5. ``Envoi''.
18 pages, plain TeX, no figures, presented at the ``1998 LNF Spring School'', Frascati, Italy, 14 -- 18 April 1998
18 pages, plain TeX, no figures, presented at the ``1998 LNF Spring School'', Frascati, Italy, 14 -- 18 April 1998