New limit on the $K^0_L \to π^0 ν\barν$ decay rate

Details New limit on the $K^0_L \to π^0 ν\barν$ decay rate New limit on the $K^0_L \to π^0 ν\barν$ decay rate

2006-07-12

arxiv.org/abs/hep-ex/0607016v2

Phys.Rev.D74:051105,2006; Erratum-ibid.D74:079901,2006

Physics

High Energy Physics

High Energy Physics - Experiment

5 pages, 4 figures, the title was changed

Scientific paper

10.1103/PhysRevD.74.051105

The first dedicated experiment for the rare kaon decay $K^0_L \to \pi^0 \nu \bar{\nu}$ has been performed by the E391a collaboration at the KEK 12-GeV proton synchrotron. A new upper limit of $2.1 \times 10^{-7}$ at the 90% confidence level was set for the branching ratio of the decay $K^0_L \to \pi^0 \nu \bar{\nu}$ using about 10% of the data collected during the first period of data taking.

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