EPJ Web Conf.
Volume 129, 2016QCD@Work 2016 - International Workshop on Quantum Chromodynamics - Theory and Experiment
|Number of page(s)||9|
|Published online||25 November 2016|
Pion polarizabilities: ChPT vs Experiment
Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980 Dubna, Russia
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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
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