Recent Results from the KTeV Experiment

Abstract

We present recent preliminary results from five decay channels. From the $K_L\to\pi^+\pi^-\gamma$ channel, we extract form factors for the CP violating M1 direct photon emission amplitude and the fraction of the total decay amplitude that is due to direct emission. We have placed an upper limit on the $K_L\to\pi^0\pi^0\gamma$ branching ratio, and preliminary measurements of the $K_L\to\pi^{\pm}e^{\mp}\nu e^+e^-$ and $\pi^0\to e^+e^-$ branching ratios are presented. Finally, we report measurements of both the branching ratio and the form factor parameters for the decay $K_L\to e^+e^-\gamma$.