Sigma-term update
Abstract
The determination of the σ-term from πN scattering is critically examined. The currently available data indicate σ≅45 MeV. Low-energy precision measurements are needed to clarify discrepancies in experimental data and to reduce the uncertainty in the strangeness content for which we obtain y≅0.2.
- Publication:
-
Physics Letters B
- Pub Date:
- January 1991
- DOI:
- 10.1016/0370-2693(91)91393-A
- Bibcode:
- 1991PhLB..253..252G