# Search for heavy neutrinos at CERN SPS

## TL;DR

This paper discusses searches for heavy neutral leptons at CERN SPS, highlighting recent results from kaon decay experiments and exploring future detection prospects for new leptonic states beyond the Standard Model.

## Contribution

It presents recent experimental results on heavy neutral leptons from kaon decay studies and discusses future search strategies at CERN SPS.

## Key findings

- Constraints on heavy neutral lepton properties from kaon decay data
- Potential sensitivity improvements at future CERN SPS experiments
- Implications for physics beyond the Standard Model

## Abstract

The phenomenology in the neutrino sector requires physics beyond the Standard Model. One possibility is the existence of new massive leptonic states which could be probed at the high intensity machines. The present results on heavy neutral leptons from the study of kaon decays in flight with the NA48/2 and NA62 experiments are presented and the future prospects for such searches at CERN SPS are discussed.