Work

Search for K S,L oscillations and invisible decays into the dark sector at NA64

Year: 2024

Type: article

Abstract: The decays KS,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 (KS,L → νν̄) ≲ 10−16. 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 KS,L → invisible decays and KS,L oscillations into the dark sector at the NA64 experiment at CERN with the sensitivity to Br (KS,L → invisible) ≲ 10−7−10−5.

Source: Natural Science Review

DOI: 10.54546/naturalscirev.100105

Authors: S. N. Gninenko, N. V. Krasnikov, V. A. Matveev

Institutions: Institute for Nuclear Research, Institute for Nuclear Research

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

OpenAlex ID: W4411022083

FWCI: 0.074

Cites:

Cited by: 1

Related to: 10