Pion polarizabilities: ChPT vs Experiment
Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980 Dubna, Russia
* e-mail: firstname.lastname@example.org
Published online: 25 November 2016
The values of charged pion polarizabilities obtained in the framework of chiral perturbation theory at the level of two-loop accuracy are compared with the experimental result recently reported by COMPASS Collaboration. It is found that the calculated value for the dipole polarizabilities (α − β)π± = (5.7 ± 1.0) × 10−4 fm3 fits quite well the experimental result (α − β)π± = (4.0 ± 1.2stat ± 1.4syst) × 10−4 fm3.
© The Authors, published by EDP Sciences, 2016
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.