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Low-energy Compton scattering on the nucleon and sum rules by Kondratyuk, S.; Scholten, O. is a scholarly article available to read on EtoBox.

What is Low-energy Compton scattering on the nucleon and sum rules about?

The Gerasimov-Drell-Hearn and Baldin-Lapidus sum rules are evaluated in the dressed K-matrix model for photon-induced reactions on the nucleon. For the first time the sum $\alpha+\beta$ of the electric and magnetic polarisabilities and the forward spin polarisability $\gamma_0$ are explicitly calculated in two alternative ways -- from the sum rules and from the low-energy expansion of the real Compton scattering amplitude -- within the {\em same} framework. The two methods yield compatible values for $\alpha+\beta$ but differ somewhat for $\gamma_0$. Consistency between the two ways of determining the polarisabilities is a measure of the extent to which basic symmetries of the model are obeyed.

Author

Kondratyuk, S.; Scholten, O.

Published

2001

Language

EN