Virtual Compton Scattering off a Spinless Target in the AdS/QCD correspondence

Details Virtual Compton Scattering off a Spinless Target in the AdS/QCD correspondence Virtual Compton Scattering off a Spinless Target in the AdS/QCD correspondence

2010-12-15

arxiv.org/abs/1012.3332v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, to appear in the proceedings of 35th International Conference on High Energy Physics, (ICHEP 2010), Paris, France, Ju

Scientific paper

We perform a study of the doubly virtual Compton scattering off a spinless target gamma* P -> gamma* P' within the Anti-de Sitter(AdS)/QCD formalism. We find that the general structure allowed by the Lorentz invariance and gauge invariance of the Compton amplitude is not easily reproduced with the standard recipes of the AdS/QCD correspondence. In the soft-photon regime, where the semi-classical approximation is supposed to apply best, we show that the measurements of the electric and magnetic polarizabilities of a target like the charged pion in real Compton scattering, can already serve as stringent tests, and presumably exclude results based on the AdS/QCD correspondence in its minimal version.

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