Pion quadrupole polarizabilities in the Nambu--Jona-Lasinio model

Details Pion quadrupole polarizabilities in the Nambu--Jona-Lasinio model Pion quadrupole polarizabilities in the Nambu--Jona-Lasinio model

2009-09-26

arxiv.org/abs/0909.4867v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 1 figure, prepared for the Proceedings of the "Mini-Workshop Bled 2009: Problems in multi-quark states"

Scientific paper

We present the results for the pion electromagnetic quadrupole polarizabilities, calculated within the Nambu--Jona-Lasinio model. We obtain the sign and magnitude in agreement with the respective experimental analysis based on the Dispersion Sum Rules. At the same time the dipole polarizabilities are well reproduced. Comparison is also made with the results from the Chiral Perturbation Theory.

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