Electromagnetic corrections to γπ ± → π 0 π ±
نویسنده
چکیده
The amplitude for the anomalous transitions γπ → ππ is analyzed within Chiral Perturbation Theory including electromagnetic interactions. The presence of a t-channel one-photon exchange contribution induces sizeable O(e2) corrections which enhance the cross-section in the threshold region and bring the theoretical prediction into agreement with available data. In the case of the crossed reaction γπ → ππ, the same contribution appears in the s-channel and its effects are small. PACS: 11.30.Rd, 12.39.Fe, 13.75.-n, 14.70.Bh, 13.60.Le
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