Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-02-02
JHEP 04 (2010) 051
Physics
High Energy Physics
High Energy Physics - Phenomenology
21 pages, version to be published in JHEP.
Scientific paper
We study the doubly virtual Compton scattering off a spinless target $\gamma^*P\to\gamma^*P'$ 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.
Marquet Cyrille
Roiesnel Claude
Wallon Samuel
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