Publications (5)
Search for a light pseudoscalar particle in the decay
Y. C. Tung, Y. B. Hsiung, M. L. Wu +59
We performed a search for a light pseudoscalar particle in the decay , with the E391a detector at KEK. Such a particle with a mass of 214.3 MeV/…
Study of the K0(L) --> pi0 pi0 nu nu-bar decay
E391a Collaboration, R. Ogata, S. Suzuki +67
The rare decay K0(L) --> pi0 pi0 nu nu-bar was studied with the E391a detector at the KEK 12-GeV proton synchrotron. Based on 9.4 x 10^9 K0L decays, an upper limit of 8.1 x 10^{-7}…
Search for the decay
Y. C. Tung, Y. B. Hsiung, J. K. Ahn +66
We performed a search for the decay with the E391a detector at KEK. In the data accumulated in 2005, no event was observed in the signal region. Based on th…
Search for Dark Photon Dark Matter in the Mass Range 41--74 using Millimeter-Wave Receiver and Radioshielding Box
S. Adachi, F. Fujinaka, S. Honda +7
Dark photons have been considered potential candidates for dark matter. The dark photon dark matter (DPDM) has a mass and interacts with electromagnetic fields via kinetic mixing w…
An aerogel Cherenkov detector for multi-GeV photon detection with low sensitivity to neutrons
Y. Maeda, N. Kawasaki, T. Masuda +10
We describe a novel photon detector which operates under an intense flux of neutrons. It is composed of lead-aerogel sandwich counter modules. Its salient features are high photon…