In a search for potential signals of neutron (n) to mirror-neutron (n′) oscillations, a collaboration centered at the Paul Scherrer Institute investigated the remaining parameter space claimed by anomalies with a dedicated high-sensitivity apparatus. An elaborate magnetic-field-mapping analysis and Monte Carlo simulation of the cumulative n-n′ oscillation probabilities along the neutron trajectories inside the storage vessel complemented the neutron data analysis. Magnetic fields were scanned in the range 5<109 μT. No evidence of anomalous neutron losses was found. Consequently, new limits for the n-n′ oscillation time constant were set. The parameter space, previously claimed for potential signals, has been excluded to 99.98%.
New High-Sensitivity Search for Neutron to Mirror-Neutron Oscillations at the PSI Ultracold Neutron Source
Berezhiani, Z.Conceptualization
;
2026-01-01
Abstract
In a search for potential signals of neutron (n) to mirror-neutron (n′) oscillations, a collaboration centered at the Paul Scherrer Institute investigated the remaining parameter space claimed by anomalies with a dedicated high-sensitivity apparatus. An elaborate magnetic-field-mapping analysis and Monte Carlo simulation of the cumulative n-n′ oscillation probabilities along the neutron trajectories inside the storage vessel complemented the neutron data analysis. Magnetic fields were scanned in the range 5<109 μT. No evidence of anomalous neutron losses was found. Consequently, new limits for the n-n′ oscillation time constant were set. The parameter space, previously claimed for potential signals, has been excluded to 99.98%.Pubblicazioni consigliate
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