Electromagnetic corrections to gamma pi(-) -> pi(0) pi(-)

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  • 11 July 2001
Abstract
The amplitude for the anomalous transition gamma pi(-) --> pi(0) pi(-) is analyzed within Chiral Perturbation Theory including electromagnetic interactions. The presence of a t-channel one-photon exchange contribution induces sizeable O(e^2) corrections which enhance the cross-section in the threshold region and bring the theoretical prediction into agreement with available data.

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