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Search for hadronic decays of feebly-interacting particles at NA62
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abstract
The NA62 experiment at CERN 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 particles, including dark photons, dark scalars, and axion-like particles, may be produced in the absorber and decay in the instrumented volume beginning approximately 80 m downstream of the dump. A search for these particles decaying in flight to hadronic final states is reported, based on an analysis of a sample of $1.4 \times 10^{17}$ protons on dump collected in 2021. No evidence of a New Physics signal is observed, excluding new regions of parameter spaces of multiple models.
Forward citations
Cited by 2 Pith papers
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Long-lived Axion-Like Particles from Tau Decays
Leptophilic long-lived ALPs produced in tau decays are shown to yield new CHARM/BEBC constraints and improved future sensitivity, particularly at SHiP, extending reach to fa up to 10^8-10^9 GeV in LFV scenarios.
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Axion Searches at the CERN SPS: From Their Dawn to Current Prospects
A review of axion and ALP searches at the CERN SPS, covering Barbiellini's 1982 proposal, the CHARM experiment, NA62/NA64 results, and future directions.
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