Abstract
The electromagnetic structure of charged pions can be described by the electric (απ) and magnetic (βπ) polarizabilities that depend on the rigidity of pion’s internal structure as a composite particle. It is shown that the values of απ and βπ can be precisely measured via the Primakoff reaction π− + (A, Z) → π− + (A, Z) + γ in the COMPASS experiment at CERN.
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Guskov, A.V. The Primakoff reaction study for pion polarizability measurement at COMPASS. Phys. Part. Nuclei Lett. 7, 192–200 (2010). https://doi.org/10.1134/S1547477110030052
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DOI: https://doi.org/10.1134/S1547477110030052