Y. Tajima

activity

20052026

K_{L} \to π^{0} ν ν

and

K_{L} \to π^{0} X^{0}

Decays at the J-PARC KOTO Experiment

176 citations · 621 across the 23 of their papers we have counts for

collaborators

23 papers

hep-ex2026

The Search for $K_{L} \to π^{0} π^{0} γ γ$ and $K_{L} \to π^{0} π^{0} X$ where $X \to 2 γ$ at the KOTO Experiment

J. Redeker, C. Lin, Y. W. Wah +23

We performed searches for $K_{L} \to π^{0} π^{0} X$ where $X$ may be an axion-like particle which promptly decays to two photons, and the first search for $K_{L} \to π^{0} π^{0} γ γ$ …

hep-ex2024★ 19 cited

Search for the $K_{L} \to π^{0} ν ν ˉ$ Decay at the J-PARC KOTO Experiment

KOTO Collaboration, J. K. Ahn, M. Farriagton +47

We performed a search for the $K_{L} \to π^{0} ν ν ˉ$ decay using the data taken in 2021 at the J-PARC KOTO experiment. With newly installed counters and new analysis method, the ex…

hep-ex2022★ 3 cited

Search for the Pair Production of Dark Particles $X$ with $K_{L}^{0} \to X X$ , $X \to γ γ$

C. Lin, J. K. Ahn, J. M. Choi +39

We present the first search for the pair production of dark particles $X$ via $K_{L}^{0} \to X X$ with $X$ decaying into two photons using the data collected by the KOTO experiment. No s…

nucl-ex2022★ 7 cited

Coherent photoproduction of the neutral pion and eta meson on the deuteron at incident energies below 1.15 GeV

T. Ishikawa, A. Fix, H. Fujimura +35

Coherent photoproduction of the neutral pion and eta meson on the deuteron, $γ d$ { $\to$ } $π^{0} η d$ , has been experimentally studied at incident photon energies ranging from the rea…

nucl-ex2021★ 22 cited

Extension of the J-PARC Hadron Experimental Facility: Third White Paper

Kazuya Aoki, Hiroyuki Fujioka, Toshiyuki Gogami +40

The J-PARC Hadron Experimental Facility was constructed with an aim to explore the origin and evolution of matter in the universe through the experiments with intense particle beam…

nucl-ex2021★ 13 cited

Resonance-like structure near the $η d$ threshold in the $γ d$ { $\to$ } $π^{0} η d$ reaction

T. Ishikawa, H. Fujimura, H. Fukasawa +34

To investigate the interaction between the nucleon $N$ and nucleon resonance $N (1535) 1/ 2^{-}$ , the $η d$ threshold structure connected to the isoscalar $S$ -wave $N$ - $N (1535) 1/ 2^{-}$ sys…

The Search for KL​→π0π0γγ and KL​→π0π0X where X→2γ at the KOTO Experiment

Search for the KL​→π0ννˉ Decay at the J-PARC KOTO Experiment

Search for the Pair Production of Dark Particles X with KL0​→XX, X→γγ