Dispersion sum rules for pion polarizabilities
High Energy Physics - Phenomenology
2010-05-12 v2 High Energy Physics - Experiment
Nuclear Experiment
Nuclear Theory
Abstract
An analysis of different dispersion sum rules (DSRs) for the dipole and quadrupole pion polarizabilities is carried out. We prove the absence of additional spurious singularities in these approaches. The results of the calculations of the polarizabilities in the framework of DSRs are compared with ChPT predictions and with data obtained in different experiments.
Keywords
Cite
@article{arxiv.0909.4849,
title = {Dispersion sum rules for pion polarizabilities},
author = {Lev Fil'kov and Viktor Kashevarov},
journal= {arXiv preprint arXiv:0909.4849},
year = {2010}
}
Comments
9 pages, to appear in the 6th International Workshop on Chiral Dynamics, CD09, July 6-10, 2009, Bern, Switzerland; minor changes