Dipole and quadrupole polarizabilities of the pion
Nuclear Theory
2008-02-18 v2 High Energy Physics - Experiment
High Energy Physics - Phenomenology
Nuclear Experiment
Abstract
Data on pion polarizabilities obtained in different experiments are reviewed. The values of the dipole and quadrupole polarizabilities of the pi^0 and pi^{+-} mesons found are compared with predictions of dispersion sum rules (DSRs) and two-loop calculations in the framework of chiral perturbation theory (ChPT). Possible reasons of a difference between the predictions of DSRs and ChPT are discussed.
Keywords
Cite
@article{arxiv.0802.0965,
title = {Dipole and quadrupole polarizabilities of the pion},
author = {L. V. Fil'kov and V. L. Kashevarov},
journal= {arXiv preprint arXiv:0802.0965},
year = {2008}
}
Comments
3 pages, contribution to proceedings of "NSTAR 2007", 5-8 September, Bonn, Germany; typos corrected