4 papers
Search for Dark Particles in at the KOTO Experiment
T. Wu, Y. C. Tung, Y. B. Hsiung +24
We report a search for an invisible particle in the decay (), where can be interpreted as a massless or massive dark photon.…
Experimental Study of Rare Kaon Decays at J-PARC with KOTO and KOTO II
J. K. Ahn, E. Augustine, L. Bandiera +62
The rare kaon decay is extremely sensitive to new physics, because the contribution to this decay in the Standard Model (SM) is highly suppressed and known ver…
Search for the Decay at the J-PARC KOTO Experiment
KOTO Collaboration, J. K. Ahn, M. Farriagton +47
We performed a search for the decay using the data taken in 2021 at the J-PARC KOTO experiment. With newly installed counters and new analysis method, the…
Proposal of the KOTO II experiment
Jung Keun Ahn, Antonella Antonelli, Giuseppina Anzivino +79
The KOTO II experiment is proposed to measure the branching ratio of the decay at J-PARC. With a beamline to extract long-lived neutral kaons at 5 degrees from…