6 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…
Kaon Physics: A Cornerstone for Future Discoveries
Jason Aebischer, Atakan Tugberk Akmete, Riccardo Aliberti +153
The kaon physics programme, long heralded as a cutting-edge frontier by the European Strategy for Particle Physics, continues to stand at the intersection of discovery and innovati…
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…
Measurement of muon flux behind the beam dump of the J-PARC Hadron Experimental Facility
T. Matsumura, Y. Hirayama, G. Y. Lim +4
A muon-flux measurement behind the beam dump of the J-PARC Hadron Experimental Facility was performed with a compact muon detector that can be inserted into a vertical observing ho…