Chiral symmetry, ππ scattering and aμ
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Gilberto Colangelo
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Article
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2006
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Elsevier Science
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English
⚖ 193 KB
The hadronic vacuum polarization contributions to (g -2)μ below one GeV are dominated by the two-pion contribution. The latter can be described by the electromagnetic pion form factor. Unitarity and analyticity strongly constrain the latter. Unitarity, e.g., implies that the phase of the form factor