Pion quadrupole polarizabilities in the Nambu--Jona-Lasinio model
Brigitte Hiller, Wojciech Broniowski, Alexander A. Osipov, Alex H., Blin
TL;DR
This paper calculates pion electromagnetic quadrupole polarizabilities using the Nambu--Jona-Lasinio model, showing agreement with experimental data and chiral perturbation theory, and providing insights into pion structure.
Contribution
It introduces a calculation of pion quadrupole polarizabilities within the Nambu--Jona-Lasinio model, aligning with experimental and theoretical results.
Findings
Quadrupole polarizabilities agree with experimental analysis
Dipole polarizabilities are accurately reproduced
Comparison with Chiral Perturbation Theory confirms consistency
Abstract
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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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · Particle physics theoretical and experimental studies · High-Energy Particle Collisions Research