Experimental study of the decay K_{L}^{0}→π^{0}νν[over ¯]

PHYSICAL REVIEW D(2010)

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摘要
The first dedicated search for the rare neutral-kaon decay K-L(0) -> pi(0)nu(nu) over bar has been carried out in the E391a experiment at the KEK 12-GeV proton synchrotron. The final upper limit of 2.6 x 10(-8) at the 90% confidence level was set on the branching ratio for the decay.
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