pi0 decay branching ratios of 5Lambda-He and 12Lambda-C hypernuclei
Abstract
We precisely measured pi0 branching ratios of 5Lambda-He and 12Lambda-C hypernuclei produced via (pi+,k+) reaction. Using these pi0 branching ratios with the pi- branching ratios and the lifetimes, we obtained the pi0 decay widths and the non-mesonic weak decay widths at high statistics with the accuracy of ~5 % (stat) for both hypernuclei.
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