Ponente
Descripción
The NA62 experiment at CERN is designed to measure the highly-suppressed decay $K^{+} \to \pi^{+}\nu\bar{\nu}$ and has collected a large sample of $K^+$ decays in flight during Run 1 (2016-2018) and Run 2 (since 2021). Searches for the decay $K^{+}\rightarrow\pi^{+}X$ using data from 2016-2022, set upper limits on the branching ratio at the $10^{-11}$ level, constraining a broad range of New Physics scenarios, including Dark Photon, Scalars and Axion-Like Particles.
The NA62 experiment at CERN can also operate in beam-dump mode, enabling searches for long-lived particles produced in 400 GeV proton interactions with the dump. A blind analysis of a sample of $1.4 \times 10^{17}$ protons on dump collected in 2021 led to the first NA62 search for long-lived New Physics particles decaying in flight to hadronic final states.
