Электронный каталог

Статья

Gninenko, S.N.
Search for K&sub(S,L) Oscillations and Invisible Decays into the Dark Sector at NA64 / S.N.Gninenko, N.V.Krasnikov, V.A.Matveev // Natural Science Review [Electronic resource]. – 2024. – No. 1. – P. 5. – URL: https://nsr-jinr.ru/index.php/nsr/article/view/31. – Bibliogr.: 73.

The decays K&sub(S,L) → invisible have never been experimentally tested. In the Standard Model (SM), their branching ratios for the decay into two neutrinos are predicted to be extremely small, Br(K&sub(S,L) → νν̄) ≲ 10&sup(−16). We consider several natural extensions of the SM, such as two-Higgs-doublet (2HDM), 2HDM and light scalar, and dark mirror sector models, that allow one to enhance the Br (KS,L → invisible) up to a measurable level. We briefly discuss the possible search for K&sub(S,L) → invisible decays and KS,L oscillations into the dark sector at the NA64 experiment at CERN with the sensitivity to Br (K&sub(S,L) → invisible) ≲ 10*−*7−10*−*5.



ОИЯИ = ОИЯИ (JINR)2024
Спец.(статьи,препринты) = С 346.5б - Свойства К-мезонов: масса, спин, четность, схемы и времена распадов