6 papers
Study of decays at Belle and Belle II
Belle, Belle II Collaborations, : +412
We report a measurement of the branching fraction for the leptonic decay . This work presents the first result using Belle~II data, an updated Be…
A search for feebly-interacting particles in decays with missing energy at Belle
Belle, Belle II Collaborations, : +406
We present a search for an invisible hidden-sector particle , produced in and decays, where ,…
Searches for hidden sectors using decays
NA62 Collaboration
Results from the study of the rare decays , and at the NA62 experiment at CERN are interpreted…
Search for hadronic decays of feebly-interacting particles at NA62
NA62 Collaboration
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, i…
First detection of a tagged neutrino in the NA62 experiment
NA62 Collaboration
The NA62 experiment at the CERN SPS reports the first detection of a tagged neutrino candidate based on the data collected in 2022. The candidate consists of a $K^+ \rightarrow μ^…
Observation of the decay and measurement of its branching ratio
NA62 Collaboration
A measurement of the decay by the NA62 experiment at the CERN SPS is presented, using data collected in 2021 and 2022. This dataset was recorded, a…