Speaker
Chieh Lin
(University of Chicago)
Description
KOTO is the dedicated experiment to study the CP-violating decay $K_L^0 \to \pi^0 \nu \overline{\nu}$. This decay is sensitive to New Physics because its branching ratio is predicted to be $3 \times 10^{-11}$ with only 2\% theoretical uncertainty. By using the data collected in 2021, we have set the worldwide best limit on the branching ratio of this decay to be $2.0 \times 10^{-9}$ at the 90% confidence level. KOTO is expected to collect ten times more data within the following 4 years and explore the New-Physics-sensitive regime. We are also preparing for the next-generation experiment, KOTO-II, to accurately examine the Standard Model. The analysis status and future plan will be summarized in this talk.
Primary author
Chieh Lin
(University of Chicago)