Volume 476 - 42nd International Conference on High Energy Physics (ICHEP2024) - Beyond the Standard Model
First NA62 search for long-lived new physics particle hadronic decays
S. Lezki
Full text: pdf
Pre-published on: December 25, 2024
Published on: April 29, 2025
Abstract
The NA62 experiment at CERN, designed to measure the highly-suppressed decay $K^{+}\to\pi^{+}\nu\bar{\nu}$, has the capability to collect data in a beam-dump mode, where 400 GeV protons are dumped on an absorber. In this configuration, New Physics (NP) particles, including dark photons, dark scalars and axion-like particles, may be produced and reach a decay volume beginning 80 m downstream of the absorber. A search for NP particles decaying in flight to hadronic final states is reported, based on a blind analysis of a sample of $1.4\times10^{17}$ protons on dump collected in 2021.
DOI: https://doi.org/10.22323/1.476.0269
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