Measurement of K^{-}_{e3} branching ratio

V. I. Romanovsky, S. A. Akimenko, G. I. Britvich +18

The branching fraction for the decay $K^{-}\to {\pi }^{0}e\bar{\nu }$ is measured using in-flight decays detected with {\bf ISTRA+} setup working at the 25 GeV negative secondary beam of…