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Kaon Experiments

High Energy Physics - Experiment 2024-10-29 v1

Abstract

After CPCP violation was discovered in the KLπ+πK_L \to \pi^+\pi^- decay, many theories were proposed to explain it, and the Kobayashi-Maskawa model and the Superweak model lasted for many years as strong candidates. High-precision kaon experiments with many new techniques and improvements rejected the Superweak model and supported the Kobayashi-Maskawa model in 1990's. After then, rare kaon decay experiments are studying KLπ0ννK_L \to \pi^0\nu \overline{\nu} decays to search for CPCP violation caused by new physics beyond the Standard Model. Various techniques have been developed to increase the sensitivity and to suppress backgrounds.

Keywords

Cite

@article{arxiv.2410.20721,
  title  = {Kaon Experiments},
  author = {Taku Yamanaka},
  journal= {arXiv preprint arXiv:2410.20721},
  year   = {2024}
}

Comments

14 pages, 8 figures. Presented at the "Accomplishments and Mysteries in Quark Flavor Physics $\sim$ 50th Anniversary of Kobayashi-Maskawa Theory (KM 50)'' symposium. Accepted for publication in Progress of Theoretical and Experimental Physics

R2 v1 2026-06-28T19:37:35.270Z