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Nucleon Polarisabilities from Compton Scattering off the One- and Few-Nucleon System

Harald W. Griesshammer
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Abstract

These proceedings sketch how combining recent theoretical advances with data from the new generation of high-precision Compton scattering experiments on both the proton and few-nucleon systems offers fresh, detailed insight into the Physics of the nucleon polarisabilities. A multipole-analysis is presented to simplify their interpretation. Predictions from Chiral Effective Field Theory with special emphasis on the spin-polarisabilities can serve as guideline for doubly-polarised experiments below 300 MeV. The strong energy-dependence of the scalar magnetic dipole-polarisability $β_{M1}$ turns out to be crucial to understand the proton and deuteron data. Finally, a high-accuracy determination of the proton and neutron polarisabilities shows that they are identical within error-bars. For details and a better list of references, consult the given references.

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Harald W. Griesshammer. 2004-11-18. Nucleon Polarisabilities from Compton Scattering off the One- and Few-Nucleon System. https://doi.org/10.1016/j.ppnp.2005.01.009

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