3 papers
hep-ex2026
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.…
hep-ex2025
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…
hep-ex2025
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…