Explanation of the apparent charge dependence of the pion-nucleon coupling
- 6 November 1989
- journal article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 63 (19), 2025-2027
- https://doi.org/10.1103/physrevlett.63.2025
Abstract
A recent, careful analysis of the world data on pp scattering concluded that the pp coupling constant was 3%–4% less than expected from charge independence and the known pn coupling constant. We propose a much simpler interpretation of the analysis of the pp data which involves no unreasonable level of charge dependence. Instead one must recognize that the pion-nucleon form factor needed in a boson-exchange model of the nucleon-nucleon force differs significantly from that relevant to a free nucleon.
Keywords
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