G. N. Perdue

Experimental study of the decay KL0→π0νν̄

The first dedicated search for the rare neutral-kaon decay

Search for the decay KL0→π0νν̄

K_L^0\to\pi^0\nu\bar{\nu}

First search for KL→π0π0νν̄

has been carried out in the E391a experiment at the KEK 12-GeV proton synchrotron. The final upper limit of 2.6

Blind background prediction using a bifurcated analysis scheme

\times 10^{-8}

KL → π0νν ̄experiment at KEK 12-GeV PS - E391a -

at the 90% confidence level was set on the branching ratio for the decay.

KL → π0ηη experiment at KEK12-GeV PS — E391a

We performed a search for the K L0-->pi0nu nu[over] decay at the KEK 12-GeV proton synchrotron. No candidate events were observed. An upper limit on the branching ratio for the decay was set to be 6.7 x 10(-8) at the 90% confidence level.We performed a search for the

Undoped CsI calorimeter for the experiment at KEK-PS

K^0_L \to \pi^0 \nu \bar{\nu}

Barrel photon detector of the KEK KL0→π0νν¯ experiment

decay at the KEK 12-GeV proton synchrotron. No candidate events were observed. An upper limit on the branching ratio for the decay was set to be

New limit on the KL0→π0νν̄ decay rate

6.7 \times 10^{-8}

Barrel photon detector of the KEK KL0-->pinunu experiment

at the 90% confidence level.