1. S. Shinohara, Search for the rare decay
$$ {K}_L\to {\pi}^0\nu \overline{\nu} $$at J-PARC KOTO experiment, in KAON2019, Perugia, Italy, 10–13 September 2019.
2. Y.-C. Tung, Recent results from KOTO experiment, in PIC2019, Taipei, Taiwan, 16–20 September 2019.
3. C. Lin, Recent result on the measurement of
$$ {K}_L\to {\pi}^0\nu \overline{\nu} $$at the J-PARC KOTO experiment, in the 3rdJ-PARC Symposium, Tsukuba, Japan, 23–26 September 2019.
4. T. Kitahara, T. Okui, G. Perez, Y. Soreq and K. Tobioka, New physics implications of recent search for
$$ {K}_L\to {\pi}^0\nu \overline{\nu} $$at KOTO, Phys. Rev. Lett.124 (2020) 071801 [arXiv:1909.11111] [INSPIRE].
5. A.J. Buras, M. Gorbahn, U. Haisch and U. Nierste, Charm quark contribution to
$$ {K}^{+}\to {\pi}^{+}\nu \overline{\nu} $$at next-to-next-to-leading order, JHEP11 (2006) 002 [Erratum ibid.11 (2012) 167] [hep-ph/0603079] [INSPIRE].