Studying the scale and q(2) dependence of K+ -> pi(+)e(+)e(-) decay

We extract the K+ --> pi (+)e(+)e(-) amplitude scale at q(2) = 0 from the r ecent Brookhaven E865 high-statistics data. We find that the theoretical lo ng-distance amplitude is in good agreement with the experimental q(2) = 0 s cale. Lastly, we find that the observed q(2) shape is explained by the comb ined effect of the pion and kaon form-factor vector-meson-dominance rho, om ega and phi poles, and a charged pion loop coupled to a virtual photon --> e(+)e(-) transition. (C) 2001 Elsevier Science B.V. All rights reserved.