The Gerasimov-Drell-Hearn Sum Rule — Experimental Aspects
The Gerasimov-Drell-Hearn sum rule relates the total cross section of polarised photons on polarised nucleons with the anomalous magnetic moment of the nucleon. It is based on very general physics principles and provides important constraints for models of the nucleon. The experimental test of the sum rule is performed by the ‘GDH-collaboration’ at the electron accelerators MAMI at Mainz and ELSA at Bonn. The data taking in Mainz has just begun.
KeywordsTotal Cross Section Anomalous Magnetic Moment Helicity State Polarise Nucleon Spin Structure Function
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