Quadrupole polarizabilities of the pion in the Nambu--Jona-Lasinio model

Brigitte Hiller , Wojciech Broniowski , Alexander A. Osipov , Alex H. Blin

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classification ✦ hep-ph

keywords modelnambu--jona-lasiniopolarizabilitiesquadrupoleresultsagreeanalysiscalculated

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The electromagnetic dipole and quadrupole polarizabilities of the neutral and charged pions are calculated in the Nambu--Jona-Lasinio model. Our results agree with the recent experimental analysis of these quantities based on Dispersion Sum Rules. Comparison is made with the results from the Chiral Perturbation Theory.

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Quadrupole polarizabilities of the pion in the Nambu--Jona-Lasinio model

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