Abstract
The mean life-time of the π0- is measured by the method of Harris, Orear and Taylor. The decay distance of π0-produced by Kπ2-decay at rest (K+→π++π0) and subsequent decay by the Dalitz mode (π0→e++e−+γ) is measured. Using Ilford G-5 emulsions, exposed in the 300 MeV/c separated K+ beam from the Bevatron at Berkeley, 88 of the above events were found. The observed mean π0 life-time is (2.8±0.9)·10−16) s.
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