Form factor in K+ --> pi+ pi0 gamma: interference versus direct emission
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We analyze the effect of a form factor in the magnetic contribution to K+ --> pi+ pi0 gamma. We emphasize how this can show up experimentally: in particular we try to explore the difference between a possible interference contribution and a form factor in the magnetic part. The form factor used for K+ --> pi+ pi0 gamma is analogous to the one for KL --> pi+ pi- gamma, experimentally well established.
9 pages revtex, 10 eps figures; improved presentation of theoretical and experimental status; refs. added
9 pages revtex, 10 eps figures; improved presentation of theoretical and experimental status; refs. added