Experimental search for the decay mode K_L -> pi^0 gamma e^+ e^-

Murakami, K.; Hemmi, Y.; Kurashige, H.; Matono, Y.; Nomura, T.; Sakamoto, H.; Sasao, N.; Suehiro, M.; Takeuchi, Y.; Fukushima, Y.; Ikegami, Y.; Nakamura, T. T.; Taniguchi, T.; Asai, M.

Experimental search for the decay mode K_L -> pi^0 gamma e^+ e^-

Authors

Description

We report on results of a search for the decay mode K_L -> pi^0 gamma e^+ e^- conducted by the E162 experiment at KEK. We observed no events and set a 90% confidence level upper limit of Br(K_L -> pi^0 gamma e^+ e^-)< 7.1x10^{-7} for its branching ratio. This is the first published experimental result on this decay mode.
10 pages, 4 figures, submitted to Physics Letters B