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Chiral symmetry and dispersion relations: from $\pi \pi$ scattering to hadronic light-by-light.
<!--HTML--><p>Chiral symmetry provides strong constraints on hadronic matrix elements at low energy, which are most efficiently derived with chiral perturbation theory. As an effective quantum field theory the latter also accounts for rescattering or unitarity effects, albeit only pertur...
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Lenguaje: | eng |
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2018
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Acceso en línea: | http://cds.cern.ch/record/2301273 |