Dipole polarizabilities of charged pions

Autor:	V. L. Kashevarov, L. V. Fil’kov
Rok vydání:	2017
Předmět:	Physics Nuclear and High Energy Physics Nuclear Theory Meson 010308 nuclear & particles physics FOS: Physical sciences 01 natural sciences High Energy Physics - Experiment Nuclear physics Nuclear Theory (nucl-th) High Energy Physics - Phenomenology Dipole High Energy Physics - Experiment (hep-ex) Pion High Energy Physics - Phenomenology (hep-ph) Polarizability Compass 0103 physical sciences High Energy Physics::Experiment Physics::Atomic Physics Nuclear Experiment (nucl-ex) 010306 general physics Nuclear Experiment Value (mathematics) Nuclear theory
DOI:	10.48550/arxiv.1703.01233
Popis:	We discuss main experimental works, where dipole polarizabilities of charged pions have been determined. Possible reasons for the differences between the experimental data are discussed. In particular, it is shown that the account of the $\sigma$-meson gives a significant correction to the value of the polarizability obtained in the latest experiment of the COMPASS collaboration. Comment: 7 pages, 2 figures
Databáze:	OpenAIRE
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